US24768A

US24768A - Improvement

Info

Publication number: US24768A
Authority: US
Publication date: 1859-07-12
Anticipated expiration: 1876-07-12

Description

M. TROMLY.

Gun-Lok.

:Patented 'July L2; 1.859

N. PETERS, PHOTD-LITHQGRAPHER, WASHINGTQN. u C.

Unire STATES PATENT' MICHAEL TROMLY, OF MOUNT VERNON, ILLINOIS.

IMPROVEMENT lN LOCKS FOR FIRE-ARMES.

Specification forming part of Letters Patent No. 241,768, dated .Iuly lf2, 1859.

To tZ who/11, it may concern/rl Be it known that I, MICHAEL TROMLY, of AWIount Vernon, in the county of Jefferson and State of Illinois, have invented a new and useful Improvement in Locks for Fire-Arms; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanyingdrawings, making part of this specification.

Figure l is a side elevation of a lock constructed after my improved plan, the lockplate being represented in section and the hammer at half-cock. Fig. 2 is asimilar View of the same, with the hammer represented at full-cock.

Similar letters in the figures refer to corresponding parts.

This improved lock contains many of the features embraced in the lock patented by me on the 13th day of October, 1857, and its construction is such as to make it impossible for the hammer to descend when placed at halfcock without being previously raised to a fullcoek, thereby guarding against accidental discharge when in this position, and to enable the trigger to discharge the hammer with more ease than heretofore.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

rIhe lock-plate A of this improved lock, the hammer B, mainspring O, stirrup D for connecting it to the tumbler E of the hammer, and link F of the toggle-joint connection arc subtantially similar in construction, arrangement, and operation to the same parts described in my patent before mentioned, and need not therefore be further described. The other link, G, of the toggle is made somewhat similar to the corresponding link of my former lock, with this difference that the claw G/ extends downward therefrom at a more obtuse angle to the line of culmination of the toggle, is rounded at its end, and is formed into a claw-hook, G2, at this part, of an acute-angular shape exactly corresponding with another hook, I, formed in a reverse position on the front part of the trigger K in such relation to the claw-hook G`z as to enable the two to become connected together when the hammer is at half-cock, as represented in Fig. 1. The

upper iiat end of the trigger is extended to the front and the rear, the latter part being rounded and suspended between rigid lugs on the same pin with and beside the end of the -link F, while the front part, K', is extended 'hammer B the said claw G is moved to the rear, and its rounded end comes. in contact with the corresponding rounded part of the hook I ofthe trigger K, which forces thetrigger on its pin to the rear, the spring L yielding to allow this movement, until the point of the two hooks G2 I meet, when the spring L instantly throws the trigger K forward to its former position and causes the two hooks to engage or lock with each other, and thus secure the hammer at half-cock, from which position it will be impossible to discharge it without continuing to raise the hammer to fulloock, 11o matter what may be the shock or force exerted on the hammer, trigger, or other parts of thelock. Upon continuing to raise the hammer the toggle is brought above the line of culmination of the said toggle, the spring M forcing it upward when it reaches that line, and the curved surfae of the claw Gl of the link G is brought against the lower curved edge of the upper widened end, K, of the trigger K, as represented in Fig. 2, the pin p, connecting the two links F G, being represented in the said iigureabove the position necessary to sustain them in order to make the object they accomplish more'manifest. By pulling the trigger K, the curved lower edge of its front widened part, K, moves over the curved surfaceI of the clawG and gradually forces the toggle below the line of culmination, when ofcourse the hammer is caused to descend by the force of the mainspring C. The

movement of the curved proj ccting edge of the trigger K over the curved surface of the claw G the distance necessary to force the toggle claw G of the link G and the trigger K, subbelow the line of culmination is gradual, and stantially as described. the power necessary to he exerted on the trig- 2. Videning the upper end of the trigger K ger to discharge the hammer is not, therefore, so as to form a projection, K', in front, Whose so likelyto affect the nerve oi' the person pulllower curved edge shall operate on the curved ing the said trigger, and to thus distract his l surface of the claw G', in the manner and for aim, as in the ordinary lock. l the purpose set forth.

\Vl1at I claim as new, and desire to secure MICHAEL TROMLY. by Letters Patent, isi \Vitnesses:

l. The combination of the hooks Gf2 I, or T. SL00 CASY, their equivalents, respectively formed on the I EDWARD MCATEE.