US 623701 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
PatentedApr. 25, |899.V H. BRISSELET.
METH'UD 0F MAKING SAFETY LOCKS.-
(Application led Jan. 18, 1899.)
Nrrn rares ArnNr rrrcn.
METHOD OF MAKING SAFETYHLOCKS.`
SPECIFICATION forming part 0f Letters Patent No. 623,701, dated April 25, 1899.
Application uled January 18, 1899.
T0 @ZZ whom. t may conoci/'71,:
Be itknown that I, HENRI BRIssELET,mech anician, a citizen of the Republic of Switzerland, residing at Geneva, in the Republic of Switzerland, have invented certain new and useful Improvements in Safety-Locks and Keys Therefor, of which the following is a speciiication.
The invention consists of a combination of means for constructing in a cheap and easy /manner a safety-lock and its key.
One portion of the improved lock forms the matrix or bottom die, by means of which the special form and configuration of the key and of a second portion of the lock are obtained by stamping, the manufacture of similar keys being therefore rendered diicult when the lock is linished without taking the said lock to pieces.
The portion of the lock which, as explained above, is used as a matrix or bottom die for stamping the corresponding key is provided with one or more suitable straight lined notches or grooves, which, if there are more than one, must beparallel to one another. The said notches or grooves maybe made of any suitable section whatever, so as not to be easily imitated, such notches or grooves being made in the said piece of the lock by means of any suitable toolv-for instance, by means of suitable grinding-wheels-and so as to be quite different in each casethat is to say, in each of said pieces of different locks. The said notches or grooves may differ by the shape or configuration of their section, by the distance between two adjacent notches or grooves, the depth of the same, and so on, and all these differences will be exactly reproduced in the key and the second portion of the lock, and no key will act upon the lock in question if it does not reproduce exactly the said notches or grooves.
The above-mentioned two portions of the lock which are provided with corresponding notches or grooves are fixed in the said lock in such a position with regard to each other that the corresponding key may be slid with little friction between the same, the said key being preferablymade of thin sheet metal, so
that the space between the said two notched Serial No. 702,613. (No model.)
portions of the lock will be so small as to render difficult the introduction between the same of any tool or wire for the purpose of opening the lock. The saidnotched portions of the lock and correspondingly-notched key are combined with a spring or spring-bolt located within the lock and intended to lock the same in any well-known manner and to be unlocked by the mere introduction of the key between the two notched portions of the lock. One of the said two notched portions of the lock may in some instances be iixed to the lock and the other one be formed or iixed on the bolt of the lock or they may be formed or fixed both to the lock or both to the bolt, their respective positions in the said lock being in any case exactly predetermined by the casing of the latter, so as to insure the working of the key in the above-described manner.
The accompanying drawings show by way of example one form of the invention.
The improved lock is supposed in this case to be intended to lock the wheel of a bicycle by means of a chain to the frame of the same when the machine is to be held inoperative.
In the drawings, Figure l is a plan view of the lock and chain when locked.' Fig. 2 is a plan of the lock, the casing of which is shown in longitudinal section. Fig. 3 is a plan of the corresponding key.. Fig. et is a side elevation of the same. Fig. 5 is a longitudinal section on the line 5 5 of Fig. l. Fig. 6 is a cross-section on the line 6 6 of Fig. 5. Fig. 7 is alongitudinal section of the lock similar to Fig. 5, but with the key shown in its unlocking position. Fig. 8 is a section through the line 8 8 of Fig. 7. Fig. 9 is a longitudinal section of the lock similar to Fig. 5 after the withdrawal of the bolt. Fig.l lO shows the bolt removed from the lock.
In all the figures of the drawings the same numerals of reference refer to the same parts.
The improved lock is composed in the fo'rm shown by way of example of a casing made of two portions 7 and S, firmly ixed to one another by rivets, solder, or by any other suit able means whatever, of a bolt 3, intended to be locked into the said casing by means of a spring 6, and of a key 2, intended to disengage the said spring 6 from the bolt 3 when the IOO lock is to be opened. The chain 9 has one of its ends iirmly connected to the casing of the loek and its other end firmly connected to the bolt 3.
In the improved lock shown in the drawings the bolt in is that part of the invention which has been called above the iirst portion of the lock, which has been used as a matrix or bottom die, and the portion of the easing 7 which is marked l in the drawings is what has been called above the second portion of the lock` the form of which has been obtained by stamping the said portion l, together with the key 2, formed of sheet metal, into the matrix 3, as shown in Fig. 8.
rPhe longitudinal grooves 4 of the look 3 are made of any irregular or regular shape Whatever, to which the key 2 and the portion 1 of the casingof the lock are exactly oongurated, having been stamped with one another. The portions 7 and 8 ot' the casing are fixed to one another in such a position that the bolt 3 and key may exactly slide between lthem, as shown in Figs. 7 and S. The bolt 3 is further provided With a transverse notch or groove lO, Figs. 7 and 10, into which engages the end of a spring (3, xed to the casing of the lock, as shown in Fig. 5, Whenever the said bolt 3 is engaged into the said oasingwithout the key 2. Said spring is divided longitudinally, so as to form a plurality of spring-fingers. If one engages then the key 2 between the said bolt 3 and the notched portion 1 of the casing of the lock, as shown in Fig. 7, the spring (5 is disengaged out of the notch or groove l() and the bolt 3 may be removed out of the look, as shown in Figs. 9 and l0.
It is to be well understood that I do not limit myself to the special construction of the look I have shown and described by Way of example.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- A method of making safety-locks, consisting in forming a portion of the lock of a piece of hard metal, provided with one or more suitable straight-lined notches or grooves of any suitable section, and forming by stamping on the said portion as a matrix or bottom die a key formed of thin sheet metal and a second portion of the look, the said key and second portion having thus exactly the form and configuration corresponding to the special form or configuration of the irst portion of the look, and then uniting the said two portions of the lock which are provided with notches or grooves to the said look in such a position with regard to each other that the key may be slid between the same so as to act upon a suitable spring or spring-bolt with which the said lock is provided, substantially as set forth.
In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.
E. DIER-SCHNEIDER, TH. MURL.