US609233A - Safety device for firearms - Google Patents

Description

No. 609,233. Patented Aug, l6, I898.

' L. .T. HOUGHTON.

SAFETY nsvic: FOR FIREARMS.

(Application med Feb. 19, 1898.) v

(No Model.)

MCI 261555 25- yzfleqz or. 2%4k M @622 f #01 461 ,UNITED STATES PATENT OFFICE.

IJIWIS T. IIOUGIITON, OF IVORCESTER, MASSACHUSETTS.

SAFETY DEVICE FOR FIREARMS.

SPECIFICATION forming part of Letters Patent No. 609,233, dated August 16, 1898.

Application filed February 19, 1.898. Serial No. 670,881. (No model.) I

T 0 all whom it ma 1 concern: 7

Be it known that I, LEWIS T. IIOUGIITON, a citizen of the United States, residing at 'Woreester, in the county of lVorcesterand State of Massachusetts, have invented a new and useful Improvement in Safety Devices for Firearms, of which the following, togetherwith the accompanying drawings, is a specification sufliciently full, clear, and exact to enable persons skilled in the art to which this invention appertains to make and use the same.

This invention relates to a novel and peculiar construction, arrangement, and mode of operation of the safety device for preventing the hammer striking the cartridge excepting when the lock mechanism is normally actuated by pulling the trigger. Different combinations of mechanism have been employed for safety purposes previous to my invention, and I do not include the broad idea of a trigger-operated safety device as of my invention.

The objects of my invention are the improvement of this class of mechanism and to provide for the purpose named a simple, efiicient, and desirable means which can be economically manufactured and practically applied to firearms of various kinds, more especially as an adjunct in the structure of the ordinary double-action-revolver lock mechanisn and for rendering the arm more reliable and safe. I attain these objects by mechanism embodying the peculiar structure and mode of operation illustrated in the drawings, wherein- Figure 1 is a side view, partly in section, of my improved safety mechanism as applied to a double-action revolver with the parts at position of safety. Fig. 2 is a similar view showing the parts at position of firing. Fig. 3 is a horizontal section atline X X on Fig. 1. Fig. lis a side view of the hammer separately. Fig. 5 is a bottom view of the safety-block. Fig. 0 is a vertical section of the same, and Fig.- 7 shows a rear view and side view of the lifter-pawl having the extension-finger.

Referring to parts, A denotes the frame; I the barrel; the cylinder; 1), the hammer, pivoted at (Z; F, the trigger, pivoted at j'; G, the sear; I, the mainspring; J, the hammer-lifting pawl, and I the improved safetyblock. The parts which are notherein specifically described in detail may be of any wellknown or suitable construction.

The safety-block I consists of a small piece of metal having a rounded front end 2 and a tapered wedge-shaped or angle-edged rear end 3. Said block is disposed, as shown, within the lock-chamber in front of the hammerbreast and is horizontally pivoted Within the frame by the pin m, so that its rear part or angular end portion 3 can swing up and down within a limited are, acting as an adjustable dog or stop for intercepting the hammer. The frame is best made with a seating-surface at 5, and the rounded end 2 of the safety-block is fitted to bear against and rock on said seat, thus affording support for theblock against the solid frame and relieving the pivot-pin'm from strain and shock.

In the front edge or breast of the hammer, below its face or striker-point n, I provide two transverse indents, recesses, or notches 6 and 7, having between them a guard or wedge-shaped lug 9, presenting a sharp angular edge 0, Fig. 4, disposed at such position that the angular end 3 of the safety-block I can pass belowor above said lug, accordingly as said block is swung downward or upward. One of the recesses is formed of a dimension for the interception of the hammer, and the other is formed for the free reception of the block without interception of the hammer when the end of the safety-block is in line with such recess and the hammer swings forward.

A suitable spring 10 is combined with the safety-block, which spring normally acts to swing the end of the safety-block to its depressed position, so that it will enter the lower notch 6 in the hammer-front.

The lifter-pawl .I, which is pivoted to the trigger-head at '1', is in its general structure and operation of well-known character, hav- 1 ing the detent s, that engages the tumbler-' so that the fingei 12 can swing forward with the throw-off movement of the pawl when the.

detent s escapes from the nick l.

In any instance where it is desired to employ this improved st-iietyeblock in firearms other than double-action revolvers the fi n-' ger 12 ormeans for raising the swinging block I can be made as a pawl h, similar to'that the safety-block I is at such position that the knife-edge of the lug 9 passes above the rear end angle 30f the safety-block, the end' of said safety-block enters the lower notch 6, and the forward movement of the hammer is arrested by said block-before the hammerface or its striker-point 71 reaches the position of impingement on the cartridge, thus preventing an explosive discharge; but when 'the rear end of the safety-block I is swung upward, so that the edge of the lug!) passes below the rear end 3 of the safety-block, then the end of the safety-block passes into the u-pper notch or recess 7, which is of sufficient dimension for its free reception, and the hammer is permitted to fall to the' full extent of its stroke for efiecting the explosive dischargeof the cartridge.

The end 3 of the block I is normally maintained at depressed position and is only raised when the trigger is drawn back nearly or quitetothethrow-off position. Consequently any accidental movement of the hammer will be intercepted by the safety-block catching in the notch 6, while at the regular firing operation the trigger act-ion and finger'12 will swing the block so its end will avoid contact with the hammer by reason of the'larger notch 7. The V-shaped notches 6 and 7 prevent the end of the swinging block from throwing out of position when the hammer falls thereon. The lower notch affords contact-surfaces for a positive and solid contact in the interception of the hammer movement.

By making the safety-block as shown and pivoting it in the frame to swing up and down at its rear end and forlningthe hammer with the angle-edged lug 9 and upper and lower recesses at the breast thereof a very simple and eflieient safety mechanism is produced. The angled mceting'edges on the parts avoid liability of an undetermined contact and.

sharply deii nes the limit between the positions for normal discharge and that at which the device stands for safety, thus rendering the improved construction very desirable and useful for the purpose intended.

T do not broadly claim, irrespective of con- .purpose set forth.

struction, the introduction of a safety-stop between the hammer and frame in a firearm, as I am aware that a stop ofdiit'erent structure and operation has heretofore been devised for such purpose.

lVhat I claim'as of my in\'cntion,-=and desire to secure by Letters Patent, is

.1. The coml'iin'ation withthe hammer, the trigger, and the lifter-pawl, of a safety block or dog pivoted within the frame adjacent to therecoil-plate, its rear end adapt dtoswing u p and down and to meet a recess and contact-' surface at the breast of the hammer respec-.

tively above and below a guard-lug thereon, a sprin g that normally depresses the rear end,75 of saidsr inging block, and a fingeror lifterpawl actuated by the trigger, for swinging upward the end of said safety-block at the; final limit of the trigger action, substantially as set forth. 7 -30 2. In combination withthe hammer having its breast provided with the upper and lower recesses or notches 6 and 7, and the intervening angle-edged lug f), the safety-block I pivoted in the frame, its rearwaidly-projecting end adapted to swing above or below said lug, a, spring that normally depresses the end of said safety-block, and means substantially as described for elevating said end when the trigger is drawn back. v

In a firearm,in combination as described,

the frame provided with the seatingsurface- 5, the safety-blockl pivotally confined in the frame bya pin 'm, and having a rounded end. acting. against said seat, and an angle-edged rear end movable up and down by swinging action, a spring normally swinging said block in one direction, the pivoted hammer having the front angleedged lug 9 with recesses above and below said lug, one of said recesses formed to effect interception of the hammer by contact with said block, and the other recess'formed for receiving the end of the block without interception of the ham mer,the lifterpawl pivoted to the trigger-head and having [05 the extension finger l2 for operating said safety-block, substantially as set forth.

4. 'The pivoted upwardly and downwardly swinging safety-block having its under front portion cut away or recessed, as at 1-3, in comno bination with the hammer, and the hammcr lifting pawl carrying the d'etent s and provided with the extended finger 12, for the .I-V'itnessmy hand this 17th day of February, 1898.

LElVIS -':l. llOUGll'lON. "Witnesses: l V

CHAS. lI. liL'HLEIHll, SIMEON E. limo.

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