White lead may enter the human system in three ways, to-wit:

Through the stomach, the lungs and the skin. In other words, it

may be eaten, inhaled or absorbed, hence the stomach, lungs and

skin should each be carefully guarded against it. To guard the

stomach, through which you are in the most danger of taking in the

poison, make it a rule to keep the mouth closed as much as possible

when using white lead, and _especially when sandpapering_. Make

it a rule to never eat or drink without first carefully cleansing

your lips, and carefully removing the paint from your hands before

eating. Tobacco chewers, who carry tobacco in their pockets, are in

especial danger of lead poison, if working in paint, because the

tobacco becomes more or less poisoned with lead from the fingers,

if the painter is not careful to clean his hands before taking a

chew. There is no great danger from inhaling white lead, except

when sandpapering, or when dusting after sandpapering.

It is a pretty good thing to carefully guard the nose with a damp

sponge while sandpapering, and to carefully free the nostrils

from lead. There is no danger of poisoning by absorption through

the skin, unless the painter is careless. When T see some men at

work, I wonder how they can possibly escape lead poisoning. Their

clothing glazed with oil paint, their hands daubed to the wrist by

grasping the brush by the head, instead of by the handle; or by

general carelessness in mixing and handling paints.

SYMPTOMS OF LEAD POISON.

Tired feeling, wakefulness at night, neuralgic pains, “shaky”

hands, constipated bowels, bad taste in the mouth, and pain in the

bowels, a blue edge on the gums, and a coated tongue. If you get

the colic, see a doctor; for the other symptoms, get away from

paint for a while if possible, and take the following: Iodide of

potash, ½ oz.; syrup sarsaparilla, 8 oz. Dose:--Teaspoonful three

or four times a day in half a cup of milk. Eat graham mush and

drink milk.

TO FINISH FURNITURE AND OTHER WORK IN SIXTEENTH CENTURY OAK.

First fill the wood with any good filler. Fill it well, then take

Vandyke brown 3 parts, and burnt sienna 1 part, and mix to a stiff

paste with boiled oil and japan, and thin with turpentine, until

you can brush it on the wood, and not have it look dauby or muddy.

Give the work a light coat, and brush it out well and carefully.

Too much pigment will make your work too dark. Wherever you want

the light or worn spots to appear, wipe off the stain with a cloth,

and with a badger blender carefully blend the stain into the edges

of the worn or light spots. Don’t stain too much at once, for fear

your stain may set so you cannot wipe out and blend. When the stain

is dry, sandpaper lightly with No. 0 paper. Finish with two coats

rubbing varnish, or with hard oil finish. Polish with rotten stone

and raw oil.

A SUPERIOR GLUE (WATERPROOF).

A very superior article may be made by dissolving 3 parts of india

rubber in 30 parts of naphtha; heat and agitation will be required

to effect the solution; when the rubber is completely dissolved,

add 64 parts of finely powdered shellac, which must also be heated

in the above mixture until all is dissolved. This mixture may be

produced in sheets like glue by pouring it while hot upon plates

of metal, where it will harden. When required for use, it may

simply be heated in a pot till soft. Two pieces of wood or leather,

joined together with this glue, can scarcely be sundered without a

fracture of the parts.

A VALUABLE CEMENT.

We find the following recipe good: The compound of glycerin,

oxide of lead, and red lead, for mending cast-iron that has been

fractured with the happiest results. It takes some little time to

dry, but turns almost as hard as stone, and is fire and waterproof.

For mending cracks in stone or cast-iron ware, where iron filling

cannot be had, we think it is invaluable. Take litharge and red

lead, equal parts, mix thoroughly and make into a paste with

concentrated glycerin to the consistency of soft putty, fill the

crack and smear a thin layer on both sides of the casting so as

to completely cover the fracture. This layer can be rubbed off, if

necessary, when nearly dry, by an old knife or chisel.

LINSEED OIL AND IRON RUST.

The oleaginous principle of linseed oil is said to be in the nature

of neutral salts called linolein, consisting of linoleic acid

combined with a glycerine base. Linolein is said by some writers to

constitute three-fourths of the volume of linseed oil, and that the

drying properties of the oil reside in the acid principle of the

linolein; that is, linoleic acid has the property of attracting and

combining with oxygen to form the substance known as dry linseed

oil. This acid is said to be a compound of several different acid

principles, combined in definite proportions. Writers seem to

disagree as to what the acids are, and in what respect they differ

from the acid properties of the non-drying fixed oils, but that is

a question which need not be discussed here. The glycerine base of

linolein seems to be common to all fixed oils, and is set down as

an oxide consisting of one equivalent of water and five of oxygen;

hence the affinity between the linoleic acid and its glycerine base.

Linoleic acid, like other acids, has an affinity for alkalies and

the ordinary metallic oxides. It unites with them, forming _neutral

compounds_. This affinity is said to be electrical; the alkalies

and oxides electro-positive, and the acid electro-negative. The

greater the contrast in this respect, the stronger the affinity;

hence, some acids separate others from their bases and form new

salts by precipitation. As an instance:

Drop sulphuric acid into a solution of acetate of lead. It will

displace the acetic acid, form sulphate of lead and precipitate,

leaving the liberated acetic acid in solution. In linolein, this

acid is so constituted that the affinity, or attraction between

it and its glycerine base, is too feeble to resist and keep back

the oxygen of the air; hence, when linseed oil is exposed to the

air in a thin layer, oxygen unites with its linoleic acid, and

this process continues until the oil becomes dry to the touch.

Beyond this point the process is slower, because the oil is now

less penetrable; but the process goes on until the layer of oil

becomes hard and brittle, no matter with what pigment it may be

mixed, although the pigment may for a time retard the action of the

destroying elements.

Linseed oil dries too slowly for general use by the painter, hence

various ways have been devised to hasten the drying process. If

the foregoing theory is correct, the process which will cause the

oil to dry to a good wearing body in the time desired, and leave

it in the best condition to resist the action of the elements and

the absorption of oxygen, is the best. I regard the lead oxides

as the best dryers for this purpose--at least according to my

experience. When we add an oxide to linseed oil as a dryer in the

small quantity which experience has taught us is best to use, it is

evident that it is not sufficient in itself to oxidize the whole of

the oil to an appreciable extent. Writers differ as to the peculiar

action of the oxides upon the oil, but I think it safe to say

that the dryer sets up some chemical reaction which increases the

affinity between the linolein and the oxygen of the atmosphere; at

any rate, there is no dispute upon the point that linseed oil in

drying absorbs a large per cent. of oxygen.

A knowledge of this unanimously conceded point led me to believe

that a coat of pure linseed oil might make the best possible

priming coat for iron work which had commenced to rust. Why?

Because iron rust is an oxide of iron, having an excess of oxygen.

Spread on rusty iron, it penetrates the rust, absorbs its excess

of oxygen and dries with the remaining neutral oxide held fast in

its body. This is my theory; whether correct or not, numerous tests

have proved to me that a coat of linseed oil will stop the rusting

of iron if applied under proper conditions. When rust is _thick or

scaling_ there is no safety short of taking it off. Iron rust is

more or less hydrated; to free it from moisture, give it the flame

of the gasoline paint burner.

WHITE ENAMEL (SELECTED).

First, the wood is primed with a composition consisting of three

parts of turpentine and one part of oil, japan gold size being used

as a dryer. On this drying thoroughly the work is rubbed down until

perfectly smooth. Next are applied two or three coats of pure white

lead mixed entirely flat; each coat is rubbed down, time being

allowed for it to dry. Equal parts of lead and zinc are used for

the next coat, and three-fourths zinc and one-fourth lead for the

one succeeding. After this has become thoroughly hard it is rubbed

down very smooth. A thin coat of color made of zinc and turpentine

is now rubbed on; for the next coat the same flat color is used,

with the addition of about one-half the quantity of good light

coach varnish. For the last coat enough zinc is used in the varnish

to make it white if the last coat of zinc is not white and solid

before varnishing. If the work is to be gilded or striped the zinc

must be left out of the last coat of varnish.

VARNISH TO IMITATE GROUND GLASS.

An expert has sent the following to the _British Journal of

Photography_: To make a varnish to imitate ground glass, dissolve

90 grains sandrac and 20 grains of mastic in 2 ounces of washed

methylated ether, and add, in small quantities, a sufficiency of

benzine to make it dry with a suitable grain--too little making the

varnish too transparent, and excess making it crapy. The quantity

of benzine required depends upon its quality--from half an ounce

to an ounce and a half, or even more; but the best results are got

with a medium quality. It is important to use washed ether, free

from spirit.

VARNISH FOR RUSTIC WORK.

One quart of boiled linseed oil and two ounces of asphaltum, to

be boiled on a slow fire until the asphaltum is dissolved, being

kept stirred to prevent its boiling over. This gives a fine dark

color, is not sticky, and looks well for a year; or, first wash

the article with soap and water, and when dry, on a sunny day do

it over with common boiled linseed oil; leave that to dry a day or

two, then varnish it over once or twice with hard varnish. If well

done this will last for years and prevent annoyance from insects.

TO CLEAN VERY DIRTY BRASS.

Rub some bi-chromate of potassa fine, pour over it about twice its

bulk of sulphuric acid, and mix this with an equal quantity of

water. The dirtiest brass is cleaned in a trice. Wash right off in

plenty of water, wipe it and rub perfectly dry, and polish with

powdered rotten stone.

TO COUNTERFEIT TORTOISE SHELL VERY FINELY.

In order to do this well, your foundation or ground-work must be

perfectly smooth and white, or nearly so, you then gild it with

silver leaf with slow size, so as to have it perfectly smooth with

no ragged edges, cleaning the loose leaf off. Then grind cologne

earth very fine, and mix it with gum water, common size; and with

this, you having added more gum water than it was ground with, spot

or cloud the ground-work, having a fine shell to imitate; and when

this is done, you will perceive several reds, lighter and darker,

appear on the edges of the black, and many times lie in streaks on

the transparent part of the shell. To imitate this finely, grind

dragon’s blood with gum water, and with a fine pencil draw those

warm reds, flushing it in about the dark places more thickly,

but fainter and fainter and thinner, with less color towards the

lighter parts, so sweetening it that it may in a manner lose the

red, being sunk in the silver or more transparent parts. When it is

dry, give it a coat of varnish, let it stand for a few days, then

rub it down with pumice stone and water. Then grind gamboge very

fine, and mix with varnish, giving of this as many coats as will

cause the silver to have a golden color, then finish with a clean

coat of varnish.

PRICE LIST.

The prices of labor, and cost of material vary so much in different

localities that it seems impossible to make a reliable price list

for general work. The position, condition, and shape of different

jobs all go towards making a general price list, an unreliable

guide; also the quality of work demanded may make 50 per cent.

difference in price. I have half a dozen printed price lists before

me, and they generally agree to about the following prices for

painting and glazing, to-wit:

_Per Yard._

1 coat on new work 8 to 10 cents

1 coat on old work 10 to 18 cents

2 coats on new work 18 to 20 cents

2 coats on old work 20 to 25 cents

3 coats on new work 25 to 28 cents

Brick walls, 2 coats 20 to 30 cents

Penciling 10 to 15 cents

PRIMING AND GLAZING SASH.

_Per Light._

10 × 14 and under 5 to 6 cents

12 × 16 7 to 9 cents

14 × 24 10 to 12 cents

18 × 24 15 to 18 cents

24 × 30 20 to 25 cents

30 × 40 35 to 50 cents

For old work where the old putty is in the sash, multiply the above

figures by 3 or 4. When called out to the house to set a light or

two charge for time and material. Most work of this kind is done at

least 30 per cent. below the above prices.

I quote below a price list for sign painters, from a very complete

report on painters’ prices and measurements, generally, by one of

the ablest of local associations of master painters and decorators:

JAPANNED TIN SIGNS.

_Gold._ _Plain._

3 × 14 inches $1.25 $ .75

6 × 8 inches 1.50 .75

8 × 10 inches 1.75 1.00

10 × 14 inches 2.50 1.50

11 × 17 inches 3.00 2.00

11 × 17 inches, 3 lines 3.50 2.55

14 × 20 inches 4.00 2.50

14 × 20 inches, 3 lines 4.50 3.00

18 × 24 inches 6.00 3.50

18 × 24 inches, 3 lines 7.00 4.00

Frames additional.

GLASS SIGNS ON WINDOWS AND DOORS.

_In Silver or Gold_ _Per Foot._

Letters up to 6 inches in height $ .75

Letters 6 to 10 inches in height 1.00

Letters 10 to 14 inches in height 1.50

Shaded, one color, 25 per cent. extra.

DRUM SIGNS.

_Gold._ _Plain._

10 × 14 inches $ 3.50 $ 2.50

11 × 17 inches 4.00 3.00

14 × 20 inches 5.00 3.50

18 × 24 inches 7.00 5.00

20 × 24 inches 8.50 6.50

24 × 30 inches 10.00 7.00

30 × 30 inches 12.00 8.50

30 × 48 inches 15.00 10.00

The above include moulding and urns and putting up.

Drilling holes in iron extra.

MUSLIN SIGNS.

_Per Foot._

Up to 1 foot high, black 8 cents

1 to 2 feet, black 10 cents

2 to 3 feet, black 12 cents

Colored one-half extra.

Muslin furnished.

Frames extra.

OIL CLOTH SIGNS.

_Per Foot._

Up to 1 foot 20 cents

1 to 2 feet 25 cents

2 to 3 feet 30 cents

Oil cloth furnished.

Frames extra.

BOARD SIGNS.

Including three coats of paint and lettering.

_Gold._ _Plain._

6 inches × 4 feet $ 4.00 $ 2.50

8 inches × 6 feet 5.00 3.50

10 inches × 8 feet 6.00 4.00

1 foot × 12 feet 7.50 5.00

1 foot × 15 feet 8.50 5.00

14 inches × 16 feet 8.50 5.00

14 inches × 18 feet 9.00 6.00

14 inches × 20 feet 9.50 6.00

16 inches × 16 feet 9.50 6.00

16 inches × 18 feet 10.00 6.00

18 inches × 18 feet 10.00 6.00

18 inches × 20 feet 12.00 7.00

18 inches × 24 feet 15.00 7.00

18 inches × 30 feet 18.00 8.00

Board extra.

Irons and putting up extra.

Shading, 25 per cent. additional, one color.

WALL SIGNS.

Two coats of paint and lettering. Extra coat, 1 cent per square

foot additional.

2 × 16 feet $ 6.00

2 × 20 feet 7.00

2 × 24 feet 8.00

2 × 30 feet 10.50

3 × 16 feet 8.00

3 × 20 feet 10.00

3 × 24 feet 12.00

3 × 30 feet 14.00

4 × 16 feet 9.00

4 × 20 feet 12.00

4 × 24 feet 13.00

4 × 30 feet 15.00

6 × 16 feet 12.00

6 × 20 feet 14.00

6 × 24 feet 16.00

6 × 30 feet 18.00

8 × 16 feet 14.00

8 × 20 feet 16.00

8 × 24 feet 18.00

8 × 30 feet 20.00

10 × 12 feet 10.00

10 × 16 feet 13.00

10 × 20 feet 16.00

10 × 24 feet 19.00

10 × 30 feet 22.00

12 × 16 feet 14.00

12 × 20 feet 18.00

12 × 24 feet 20.00

12 × 30 feet 25.00

14 × 20 feet 20.00

14 × 24 feet 24.00

14 × 30 feet 28.00

16 × 24 feet 26.00

16 × 30 feet 39.00

20 × 24 feet 30.00

20 × 30 feet 35.00

20 × 40 feet 40.00

21 × 30 feet 37.00

24 × 36 feet 42.00

24 × 40 feet 48.00

30 × 40 feet 60.00

30 × 50 feet 70.00

30 × 60 feet 80.00

SHOW CARDS.

1 sheet, 22 × 25 $ 1.50

1 sheet, 14 × 22 .75

1 sheet, 11 × 14 .50

The above prices are based upon white lead at 7 cents per pound

and wages at 33½ cents an hour.

MIDSUMMER PAINTING.

All things considered, which is the best time of the year to do

outside painting? Spring and fall, did you say? Well, yes. I know

nearly all painters think so, and the people outside the trade are

almost, if not quite, unanimous in holding the same opinion. But

why? Do the winds of March, the frequent showers of April and May

add very much to the pleasure and profit of doing outside work

in spring? Do the soaking rains, which come along about the time

of the vernal equinox and drive you off your job for a week or

two and watersoak your unprimed work, add much pleasure to your

recollections of spring painting? Do you remember anything about

the clouds of midges and thousands of little moths which filled the

air, ready and willing to decorate your paint with their little

bodies on every still, warm mid-day in April and May? Of course, we

are speaking now of climatic conditions from our own standpoint,

the great Northwest, which may also be true in the Middle and

New England states. The mornings and evenings of spring and fall

are apt to be cool--often frosty; then the oil stiffens and the

paint rubs out hard and goes on slow, and we lose time and work

harder. Practically, I favor midsummer for outside work, because

the temperature is more uniformly warm and the paint spreads

easily and evenly at any time of day, and as a rule the rains are

less frequent and give a longer warning of their approach. The

little black flies are not so plentiful in the hot days of summer

as they are in spring and early fall. They are either dead or

seek the shade of trees and grass. The dew is all gone in summer

before seven o’clock a. m., and does not commence to fall until

after quitting time. A carpet of grass and other vegetation covers

a large portion of the ground in summer, holding down the dust.

The winds are not usually so high and gusty in summer as they are

in the spring and fall. In the warm days of summer your work is

more apt to dry quickly, cleanly and evenly; and when you “knock

off” from work at six p. m., and the sun is yet two hours above

the horizon, you know that your last ground stretch will soon be

out of the way of dust and rain. In the hot weather of summer the

pores of the wood are all open, and the oil, which is then soft

and thin, goes farther into the wood than in spring and fall, when

the weather is cool. There are, it is true, some fine days in the

fall for outside work, but the rainy season of the autumnal equinox

and the frosty nights of the later months often retard your work

and mar the finish of your job. One objection urged against summer

painting is the flies, but really are the flies which injure paint

any more numerous in midsummer than they are in spring and fall? It

is true the festive house-fly is in his glory in the summer, but,

as a rule, he is too smart to get stuck in outside paint. To get

inside is his ambition, and the molasses-cup and sugar-bowl are his

objective points. If the house-fly is an objection in the summer,

it certainly is a greater one in the fall, for in September and

early in October they are thicker, saucier and more familiar than

at any other time of year; then they want not only to get at the

sugar, but to get in and warm.

A correspondent asks: “Does the reader know from practical

experiment that one season is better than another for applying

outside paint?” I suppose the writer means the effect upon the

wearing qualities of the paint and the permanency of the color.

I have been experimenting for a practical solution of this

question for my own satisfaction and guidance, and have come to

the conclusion that paint put on the outside in the hot weather of

summer will wear as well and hold its color as long as paint put on

in the cooler days of spring and fall. I know the idea that paint

dries too fast in hot weather is almost universal, but I think it

grows largely from the fact that a quick-drying paint is not as

good for outside as a slow dryer; but you must remember that there

is a great difference between a quick-drying paint and drying a

slow paint as quickly as the ingredients will admit of. Linseed

oil dries or hardens by absorbing oxygen from the air, and that

process goes on more rapidly in hot weather than in cool weather,

because the air in hot weather is in a condition more freely to

part with its oxygen, or because the oil is in a better condition

to receive it, or both. In other words, a warm atmosphere hastens

the process of absorption and a cool air retards it, but in either

case the result is the same: the air gives up enough of its oxygen

to solidify the oil. Now, the question arises, can any difference

be discovered (chemical or otherwise) in the composition of the

paint, whether dried in warm or cool air? From a business-point of

view, I have long advocated summer as a good time to paint outside,

and have usually succeeded in converting customers to my views upon

the subject, and as a consequence have not often had a dull time

in midsummer. We painters in the country know how unpleasant

and unprofitable it is to have all the work of the year rushed

upon us in the spring and fall, and I think if painters generally

could convince themselves by practical experiment that, all things

considered, summer time is the best season of the year to do

outside work, and advocate the same to their customers, backed by

argument and practical illustration, there would soon be less need

of complaint about a dull season in midsummer.

TO REMOVE PAINT.

1. An expeditious way is by chemical process, using a solution of

soda and quicklime in equal proportions. The soda is dissolved in

water, the lime is then added, and the solution is applied with a

brush to the old paint. A few moments are sufficient to remove the

coats of paint, which may be washed off with hot water. The oldest

paint may be removed by a paste of the soda and quicklime. The wood

should be afterwards washed with vinegar or an acid solution before

repainting, to remove all traces of alkali.

2. Wet the place with naphtha, repeating as often as required; but

frequently one application will dissolve the paint. As soon as it

is softened, rub the surface clean. Chloroform mixed with a small

quantity of spirit ammonia, composed of strong ammoniac, has been

employed very successfully to remove the stains of dry paint from

wood, silk, and other substances.

3. To remove paint from floors.--Take one pound of American

pearlash, three pounds of quickstone lime. Slake the lime in

water, then add the pearlash, and make the whole amount about the

consistency of paint. Lay the mixture over the whole body of the

work which is required to be cleaned, with an old brush; let it

remain for twelve or fourteen hours, when the paint can be easily

scraped off.

TO SOFTEN PUTTY AND REMOVE OLD PAINT.

1. Take three pounds of quickstone lime; slake the lime in water,

then add one pound of American pearlash; apply this to both sides

of the glass and let it remain for twelve hours, when the putty

will be softened, and the glass may be taken out without being

broken. To destroy paint, apply it to the whole body which is

required to be cleaned; use an old brush, as it will spoil a new

one; let it remain about twelve or fourteen hours, and then the

paint may be easily scraped off.

2. To remove paint from old doors, etc., and to soften putty

in window frames, so that the glass may be taken out without

breakage or cutting, take one pound of pearlash and three pounds

of quicklime, slake the lime in water and then add the pearlash,

and make the whole about the consistency of paint. Apply to both

sides of the glass and let it remain for twelve hours, when the

putty will be so softened that the glass may be taken out of the

frame without being cut, and with the greatest facility. To destroy

paint, lay the above over the whole body of the work which is

required to be cleaned, using an old brush, as it will spoil a new

one. Let it remain for twelve or fourteen hours, when the paint can

be easily scraped off.

3. Paint stains on glass.--American potash, 3 parts; unslaked lime,

1. Lay this on with a stick, letting it remain for some time, and

it will remove either tar or paint.

TREATMENT OF DAMP WALLS.

There are two classes of damp walls, first where the water comes

in from the outside from defective roofs, bad gutters, defective

pipes, and where it comes through the walls from the ground, as

in basements. In the other class we may include walls which are

dampened by condensation of moisture, in places shut off from the

general artificial temperature of the room, behind stationary

furniture. Such walls may dry out during hot weather, or they may

be kept damp by a growth of mold or fungus.

Practical House, Wagon and Automobile Painter including sign painting, and valuable hints and recipes · 第 3 / 7 段