US752518A

US752518A - James p

Info

Publication number: US752518A
Authority: US
Publication date: 1904-02-16
Anticipated expiration: 1921-02-16

Description

No. 752,518 PATENTED FEB. 1 1904. J. CLARK. KEY.

APPLICATION FILED AUG. 1, 1903.

N0 MODEL.

WWNESSES: INVENTORQ i ATTORNEY.

THi ucmRrs PETERS coy. moroumoa wasumcrom n. c.

UNITED STATES Patented February 16, 1904.

PATENT Orricn.

JAMES P. CLARK, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE R. NEU- MANN HARDWARE COMPANY, A CORPORATION OF NEW JERSEY.

KEY.

SPECIFICATION forming part of Letters Patent No. 752,518, dated February 16, 1904.

Application filed August 1, 1903.

To all whom it may concern:

Be it known that I, J AMES P. CLARK, acitizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented and produced new and original Improvements'in Locking-Keys; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, ref erence being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The objects of this invention are to reduce the cost of manufacturing keys for locking and unlocking bag or case locks and other locks, to reduce the Weight of the keys, whereby they may be more conveniently carried in the pocket, and to secure other advantages and results, some of which may be referred to here'- inafter in connection with the description of the working parts.

The invention consists in the improved locking-key and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth, and finally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like characters of reference indicate corresponding parts in each of the several figures, Figure 1 is a side elevation of the improved key. Fig. 2 is an end view of the same. Fig. 3 is a detail side view of the finger portion or bow of the key, and Figs. 4: and 5 are detailed views of a blank adapted to be shaped up by suitable dies or formers to the shape required for service in the key in connection with the said bow.

In said drawings, 10 indicates the finger por: tion or bow of the key, which is preferably a casting having a reduced solid cylindrical shank 11 integral therewith, the said shank being provided with a shoulder 12 to limit the movement of the tubular part of the key onto said shank in its application to the said bow, as will hereinafter be described. The said tubular part 13 comprises a piece of sheet metal 131, turned into tubular or hollow cylindrical form to receive the cylindrical shank ll of the bow Serial No. 167,825. (No model.)

at one end and form a post-hole at the opposite end. Thesheet-metal plate 131 is provided near one of its longitudinal edges, at or near the extremity of the same, with a lateral projection 15, which is bent at right angles to the plane of the said plate, preferably before turning, so that when the said plate is turned in cylindrical form the said bit projection 15 will stand in a radial line out from the said tubular part of the key, as shown in Figs. 1 and 2. The bit is bent laterally, as in Figs. 1 and 5, at a point back from one longitudinal edge of the tubular part, forming a recess into which a tongue 19, projecting from the opposite longitudinal edge, enters and breaks the longitudinal joint formed by the meeting edges, thus conducing to a stronger construction. I prefer to form in the said shank of the how a slot 16, Fig. 3, for a pin 17, Fig. 1, and to perforate the plate, as shown at 18, so that the said fastening-pin 17 may be inserted through the said perforations 18 of the plate and extend through the slot 16 in the shank of the bow, the ends of the said pin being oifset or riveted in any suitable manner toretain the parts rigidly and securely in place. The

slot 16 is preferably cast in the shank 11 at one side thereof to avoid the cost of boring or cleaning out the hole, the pin 17 being in this event arranged a little to one side of the longer axis of the key. Thus constructed, the key presents a strong and firm union of parts, the amount of metal required in said key is reduced so that the weight of the same is much less in large keys, such as are used indoors, and avoids or dispenses with certain mechanical operations which are expensive and tedious and common to the integrally-cast or struck-up keys now on the market, such as drilling, centering, and the loss incident to improper centering and drilling.

The shape of the parts may be changed and other changes effected without departing from the spirit or scope of the invention.

Having thus described the invention, what I claim as new is" 1. The improved key herein described comprising a bow, having a shank with a cylindrical reduction at one end, and a sheet-metal tube turned about and fastened onto said reduction of said shank, and having means to engage the lock at the end thereof opposite said shank, substantially as set forth.

2. The combination With a bow havinga shank, of a separate tubular piece riveted onto said shank at one end and having a laterallybent bit extension 15, formed back and away from one longitudinal edge and at its opposite longitudinal edge having a tongue 19, adapted to enter the recess formed in bending the bit and break the longitudinal joint at the meeting of the longitudinal edges, said bit being adapted to engage the lock to unlock the same, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 23d day of July, 1903. e

JAMES P. CLARK. Witnesses:

CHARLES H. PELL, O. B. PITNEY.