CHAPTER II.

ANCIENT LOCKS: GRECIAN, ROMAN, EGYPTIAN.

Locks and door-fastenings have not, until modern times, been susceptible

of any classified arrangement according to their principles of

construction. They have been too simple to require it, and too little

varied to permit it. That some such fastenings must be employed wherever

doors of any kind are used is sufficiently apparent; and there is a

little (though only a little) information obtainable, which shews the

nature of the fastenings adopted in early times. The bolt, the hasp, the

chain, the bar, the latch, the lock, all were known, in one or other of

their various forms, in those ages which we are accustomed to consider

classical. Travellers, generally speaking, do not descend to locks, or

rather they do not think about them; otherwise they might have collected

much that would have been novel and applicable to the present work; and,

indeed, there is some ground for the assertion, that a notice of the

door-fastenings of all nations would reveal to us something of the

social and domestic habits of various members of the great human family.

Be this as it may, however, we may profitably make a little inquiry into

the locks of ancient times.

In the volumes of Lardner’s _Cyclopædia_ relating to the “Manners and

Customs of the ancient Greeks and Romans,” we do not find any mention of

the kinds of locks used by those nations; but the author, while

describing the houses, says:--“Doors turned anciently upon large pivots

in the centre, let into sockets in the lintel and threshold, so that one

of the sides opened inwards, the other outwards; and Plutarch gives the

following curious reason why persons were to knock and alarm the

porter, viz. lest the visitor entering unawares should surprise the

mistress or daughter of the family busy or undressed, or servants under

correction, or the maids quarreling.” As the visitors had thus the power

(if permitted so to do) to open the outer door of a house, it would

appear that very little in the nature of a lock was employed under

ordinary circumstances, unless indeed it were a mere latch. In respect

to Roman houses it is stated, that “the doors revolved upon pivots,

which worked in a socket below, and were fastened by bolts which hung

from chains.” There is no mention of locks here. Mr. St. John, in his

work on the same subject, says: “The street-door of a Grecian house,

usually, when single, opened outwards; but when there were folding-doors

they opened inwards, as with us. In the former case it was customary,

when any one happened to be going forth, to knock, or call, or ring a

bell, in order to warn passengers to make way.” After describing the

various kinds of wood of which the doors were made, he proceeds: “The

doors at first were fastened by long bars passing into the wall on both

sides; and by degrees smaller bolts, hasps, latches, and locks and keys,

succeeded. For example, the outer door of the thalamos in Homer was

secured by a silver hasp, and a leathern thong passed round the handle,

and tied, perhaps, in a curious knot.”

Mr. Yates, in a learned article on this subject in Smith’s _Dictionary

of Greek and Roman Antiquities_, collects numerous details scattered

through various early writers. We will string together a few of these

details, so far as they have any relation to the fastenings of doors.

The outer door of a Roman house was generally called _janua_; whereas

the inner doors were called _ostia_. The doorway, when complete,

consisted of four indispensable parts--the threshold or sill, the

lintel, and the two jambs. The threshold, on which the feet trod, was

often regarded with a kind of superstitious reverence; the lintel, which

crossed the doorway at the top, having a considerable superincumbent

weight to bear, was usually made of one piece of timber or stone of

great strength; the jambs, or side uprights, were also made in one

piece each. The doorway, in every building of the least importance,

contained two doors folding together; even the internal doors had their

bivalve construction. But in every case each of the two valves was wide

enough to allow persons to pass through without opening the other; in

some cases even each valve was double, so as to fold like our

window-shutters. These doors, or valves, were not hinged to the

side-posts, as with us, but were, as has already been stated, pivoted to

the lintel above and the threshold below. The fastening usually

consisted of a bolt placed at the base of each valve or half-door, so as

to admit of being pushed into a socket made in the sill to receive it.

The doorways in some of the houses at Pompeii still shew two holes in

the sill, corresponding to the bolts in the two valves. At night, the

front door of the house was further secured by means of a wooden and

sometimes an iron bar placed across it, and inserted into sockets on

each side of the doorway; hence it was necessary to remove the bar in

order to open the door. Chamber-doors were often secured in the same

manner. In the _Odyssey_ there is mention of a contrivance (adverted to

by Mr. St. John) for bolting or unbolting a door from the outside; it

consisted of a leather thong inserted through a hole in the door, and by

means of a loop, ring, or hook, capable of taking hold of the bolt so as

to move it in the manner required. We have here evidently the elements

of a more complete mechanism; for the bolt was a rude lock in the same

degree that the thong was a rude key. That the Romans afterwards had

real locks and keys is clear; for the keys found at Herculaneum and

Pompeii, and those attached to rings, prove that a kind of warded lock

must have been well known.[2] There are the remains of a tomb at

Pompeii, the door of which is made of a single piece of marble,

including the pivots, which were encased in bronze, and turned in

sockets of the same metal; it is three feet high, two feet nine inches

wide, and four and a quarter inches thick; it is cut in front to

resemble panels, and thus approaches nearer in appearance to a modern

wooden door; and it was fastened by some kind of lock, traces of which

still remain.

[2] An examination of the Roman keys in the British Museum

sufficiently attests this fact.

The same facts frequently become more clear when described in different

words by different writers. We shall make use of this circumstance. Mr.

Donaldson, in his _Essay on Ancient Doorways_, presents us with details

which illustrate many of the foregoing remarks. “Homer describes the

treasures and other valuable objects (mentioned in the _Odyssey_) as

being kept in the citadel, secured merely by a cord intricately knotted.

This, of course, was soon found to be a very insufficient protection,

and therefore a wooden bar was adopted inside the doors of houses, to

which it was attached by an iron latch, fastened or removed by a key

adapted to it; this key was easily applied from within; but in order to

get at it from without, a large hole was made in the door, allowing the

introduction of the hand, so as to reach the latch and apply the key.

The lock called the Lacedæmonian, much celebrated by ancient writers,

was invented subsequently; it was especially fitted for the inner

chambers of houses, the bar fastenings continuing to be employed for

closing the outer doors of dwellings and the entrance-gates to cities.

The Lacedæmonian lock did not require a hole to be made in the door, for

it consisted of a bolt placed on that side of the entrance-door which

opened, and on the inside of a chamber-door. When a person who was

outside wished to enter, it was necessary for him to insert the key in a

little hole and to raise the bolt; and in time this species of fastening

was improved by the insertion of the bolt in an iron frame or rim

permanently attached to the door by a chain, and fastening the door by

the insertion of the hasp, through the eye of which was forced the bolt

inside the lock by applying the key.” After quoting a Latin sentence

from Varro in elucidation of his subject, Mr. Donaldson proceeds to

observe, that for the most part the locks of the ancients were different

in principle from those of modern days, not being inserted or mortised

into the doors, nor even attached except by a chain; they were, in fact,

padlocks.

One of the passages in the _Odyssey_ alluding to the primitive mode of

fastening the valves or folding-doors of a house runs thus:--

“Whilst to his couch himself the prince addressed,

The duteous nurse received the purple vest:

The purple vest with decent care disposed,

The silver ring she pulled, the door reclosed;

The bolt, obedient to the silken cord,

To the strong staple’s inmost depth restored,

Secured the valves.”

Most of the other great nations of antiquity resembled either the

Egyptians or the Greeks and Romans, more or less closely, in their

domestic and domiciliary arrangements; or, at any rate, so far as such

humble matters as locks and keys are concerned, we need not seek far

from those nations for examples. The Nineveh and other Assyrian

explorations have, however, revealed many curious and unexpected facts;

from the temples and the palaces we may by and by penetrate into the

houses and rooms of the citizens sufficiently to know how their doors

were fastened. In the mean time ancient Egypt awaits our notice.

Sir J. Gardner Wilkinson, in his _Manners and Customs of the Ancient

Egyptians_, gives the following information concerning the doors and

door-fastenings of that remarkable people, on the authority of models,

sculptures, and paintings, still existing. The doors were frequently

stained so as to imitate foreign and rare woods. They were either of one

or two valves, turning on pieces of metal, and were secured within by a

bar or by bolts. Some of these bronze pins have been discovered in the

tombs of Thebes; they were fastened to the wood with nails of the same

metal, the round heads of which served also as ornaments. In the stone

lintels and floors behind the thresholds of the tombs and temples are

still frequently to be seen the holes in which the pivot-pins turned, as

well as those of the bolts and bars, and the recess for receiving the

opened valves. The folding-doors had bolts in the centre, sometimes

above as well as below; a bar was placed across from one wall to the

other.

In many of the ancient Egyptian doors there were wooden locks fixed so

as to fasten across the centre at the junction where the two folds of

the door met. It is difficult, by mere inspection of the bas-reliefs and

paintings, to decide whether these locks were opened by a key, or were

merely drawn backwards and forwards like a bolt; but if they were really

locks, it is probable that they were on the same principle as the

Egyptian lock still in use. For greater security, these modern locks are

occasionally sealed with a mass of clay; and there is satisfactory

evidence that the same custom was frequently observed among the ancient

inhabitants of that country. Sir J. G. Wilkinson gives a representation

of an iron key, now in his possession, which he procured among the tombs

at Thebes, and which looks very much like a modern burglar’s picklock.

In relation to keys generally, and after mentioning the use of bronze

for their manufacture, he says: “At a later period, when iron came into

general use, keys were made of that metal, and consisted of a straight

shank about five inches in length, and a bar at right angles with it, on

which were three or more projecting teeth. The ring at the upper

extremity was intended for the same purpose as that of our modern keys;

but we are ignorant of the exact time when they were brought into use;

and the first invention of locks distinct from both is equally

uncertain; nor do I know of any positive mention of a key, which, like

our own, could be taken out of the lock, previous to the year 1336

before our era; and this is stated to have been used to fasten the door

of the summer parlour of Eglon, the king of Moab. The description here

adverted to is that contained in Judges iii. 23-25: ‘Ehud went forth

through the porch, and shut the doors of the parlour upon him, and

locked them ... his servants ... took a key, and opened them.’”

The curious and ingenious wooden lock of ancient Egypt is still in use

in Egypt and Turkey. In Eton’s _Survey of the Turkish Empire_, published

towards the close of the last century, the locks then and there in use

are thus described: “Nothing can be more clumsy than the door-locks in

Turkey; but their mechanism to prevent picking is admirable. It is a

curious thing to see wooden locks upon iron doors, particularly in Asia,

and on their caravanserais and other great buildings, as well as upon

house-doors. The key goes into the back part of the bolt, and is

composed of a square stick with five or six iron or wooden pins, about

half an inch long, towards the end of it, placed at irregular distances,

and answering to holes in the upper part of the bolt, which is pierced

with a square hole to receive the key. The key being put in as far as it

will go, is then lifted up; and the pins, entering the corresponding

holes, raise other pins which had dropped into these holes from the part

of the lock immediately above, and which have heads to prevent them

falling lower than is necessary. The bolt, being thus freed from the

upper pins, is drawn back by means of the key; the key is then lowered,

and may be drawn out of the bolt. To lock it again, the bolt is only

pushed in, and the upper pins fall into the holes in the bolt by their

own weight.” Mr. Eton, probably seeing how well the tumbler-principle is

here understood, says: “This idea might be improved on; but the Turks

never think of improving.” The locks on the doors of modern houses in

Cairo seem to be of this long-established form, except where iron locks

have been imported from Europe.

A letter was inserted in the _Journal of Design_ for July 1850 from Mr.

W. C. Trevelyan; in which, after adverting to the Egyptian lock, he

says: “It is remarkable that the locks which have been in use in the

Faröe Islands, probably for centuries, are identical in their

construction with the Egyptian. They are, lock and key, in all their

parts made of _wood_; of which material, if I mistake not, they have

also been found in Egyptian catacombs; and so identical with the

Faröese in structure and appearance, that it would not be easy to

distinguish one from the other.”

[Illustration: fig. 1.]

[Illustration: fig. 2.]

[Illustration: fig. 3.]

[Illustration: fig. 4.]

The construction of this remarkable Egyptian or pin-lock will be

understood from the accompanying engravings. The quadrangular portion,

_a a_ fig. 1, is the case of the lock, screwed or otherwise fastened to

the door, having a wooden bolt, _b b_, passing horizontally through a

cavity in it. In the part of the case above the bolt are several small

cells containing headed pins, arranged in any desired form; and in the

top of the bolt itself are an equal number of holes similarly arranged.

The effect of this arrangement is such that, when brought into the right

positions, the lower ends of the headed pins drop into the corresponding

holes in the bolt, thereby fastening the bolt in the lock-case. A large

hollow, or cavity, is made at the exposed end of the bolt, the cavity

extending as far as and beyond the holes occupied by the pins. The key

consists of a piece of wood (shewn in two positions, figs. 3 and 4,)

having pins arranged like those in the lock, and projecting upwards just

to a sufficient distance to reach the upper surface of the bolt. This

being the arrangement, whenever the key is introduced and pressed

upwards, its pins exactly fill the holes in the bolt, and by so doing

dislodge those which had fallen from the upper part of the case. The

bolt may, under these circumstances, be withdrawn (as shewn in fig. 2),

leaving the headed pins elevated in their cells, instead of occupying

the position shewn by the dotted lines in fig. 1. The cavity in the bolt

must of course be high enough to receive the thickness of the key, and

also the length of the pins protruding from the key.

This primitive lock comprises many of the best features of the tumbler

or lever-locks of later days, as will be seen in a future chapter. There

will also be opportunities of shewing how the pin-action has been

applied in other ways in some of the modern locks.

Rudimentary Treatise on the Construction of Locks · 第 2 / 14 章