US 910276 A
Description (OCR text may contain errors)
GEORGE EASDALE, Ol" OTTAWA, ONTARIO, CANADA, ASSIGNOR OF ONE-HALF TO KETCH'UM ds COMPANY, OF OTTAWA, CANADA, A FIRM.
RECOIL-ABSOBLYBER FOR FIREARMS.
Specification of Letters Patent.
Patented Jan. i9, 1909.
Application led. February 20, 1908.' Serial No. ll.
To all whom it 'may concern:
ile it known that l, Grenen Ensoinn, of the city of Ottawa, inthe county of Carleton, hrw-fno@ of Ontario, Cnnadii, have invented,T certain new and useful improvements in Ref." i-oil-.-LbsoibersA for Firearms, oi' which the following is n speelde-ation.
.ily invention relates to improvements in recoil absorbers for lire arms, and the ob-`-A ie'eis ot' my invention are to provide improved means l'or lspring; cushioning the recoil ofc fire-arm, such :is :i rilie or shot gun, Working in combination with pneumatic means for affording on additional cn'shionl rind retin-tiling the rebounding notion of the spring'.
bpeeiicelly lconsidered in its rclation'to a. 'rifle or shot gun, the invention includes an edjustablepnenmotcally cushioned butt plate, and a grip plete also adjustable, and pneiunnticnlly cushioned, connected to the forward ports of the stock of the rifle or shot non.
rl`he invention is described in detail, in the :iccompunyino' specifi iition Li-nd drawings.
ln the drawings, l rnre l is a side View o'l5 the rifle, partially in section having my improved recoil absorbing' device attached thereto. Fig'. 2- is ini enlarged section through the side ollhc rille. Fig. 3 is :in enlarged hinn'itiiiiinnl section through the rip plete on thc. forward part of the stock. Fig. i is en enlarged section through en elicrnzitive forni ot britt plate.
in the ilriiwings. like. letters oi reference indicate eorrespmnling parts in euch ligure.
elierring' to the drawings, A represents the rilie ot any sniluble` Construction, a the stock thereof' und ,"1 thcfbntlt.
in nccordzuice with my invention, an z1djnstzihle bott plate l is provided,` which, in the embodiment illnslrnied, is inthe form of n shell having the sides liting over und sliiliil'ily engaging the hntt l). Centrally lo within the b..tt is o. cylindrical .recess il within which tightly lits n, tubular shell C, which hns cooperative therewith, :1. slightly smaller shell l), the outer end oli which is connected to the britt` plate, through the ineilinin olie connecting nieniberll having n projection c thereon, with nn interiorly screw-threaded recess i', which Vis engaged by :i correspoinliugly exteriorly screwthreinleil .sni'l'nce on the shell. lncunnitiic L insistence is provided both lo the collapse and dstention of these shells, this being eli'ccted by o packing ring f, abutting the edge of the inner shelhend held in position there-against, by means oa flange L on a tubular member z' having screw-threaded en- 60 gegement with the interior ol the shell D.
The shells are normally maintained in. distended position by e compression spring F located within the seme, and the pneumatic action is further increased by means of two additional cooperating shells G and ll, which fit, sir-tight, one Within the other, the outer shell G- hiiving the end abutting the projection e and the inner shell H havingl screw-threaded engagement with an internally-screW-threiided recess la in a. plug y' which forms the inner end of the shell C mid which may be retained in position by a transverse pin n.
It will be observed that on'the recoil of 75 the rifle and when the parts of the apperntiis are collapsed, a pneumatic cushion will be provided both between the shells C and l) and between the shells G and H, ond alter the recoil, the butt plate will be moved gradually back to its .no1-mel position under the fiction of the spring F, which spring has also silorded resistance to the inward movenient. The result ont this arrangement is to provide :in exceedingly uniform movement of the but-t plete: doingl sway with the rapid recoil produced by spring action clone, which is exceedingly disadventageons. In the present elise, the connection between the tubular members :ire only practically and not absolutely nir-tight, so that. e certain :imonnt of nir will be forced out during the collapsing und this will prevent the s rinvio moving the butt plate back too rapid y, as
the air l'orced out must be drawn in gradu- 95 ziliy around the joints.
The cushioned grip plate on the forward perl. oi' the stock is substantially the come in coi'istrnction. ns that in the butt, and con.- sists of two tnbnl-.ir shells I and J, fitting' 100 nir-iight, one \.vithin the other, :ind normally ortendeil by :Hspring l, second shells L and i-l' extending about tl'ies'e, tilting one within the other, end provided with an airtight connection by ineens ot' Jrhe packing ring i, 105 held in position by the flange p on the tube l which hns screw-threaded engagement with til e interior of the shell M.
the shell. M is connected to the rifle by means of o suitable strep m, while the shell Q A e? :we
L is adapted to serve as a rip plate for the v' rifleman, the end bein c osed by :if seien j i l. h threaded plug N, which has an internally s 1 :i y including two concentric screw-threaded recess o therein, into Whi i shells connected to the firearm, two similar the shell I fits. When. the combination cti wncefrntric shells connected to the movable the grip plate and butt plate is employed, l part, each of the shells having a practically the recoil of the rifle will scarcely be felt by air-tight connection with the corresponding the rileman, and the course of the shooting shell of the opposite pairl and aspring invvill thus be correspondingly more accurate. closed Within the pairs of the shells nor- In the form shown in Fig. il, an outlet. mally extending the same.
passage s is providedin the connecting mem- Ll. The combination With. a tire-arm and ber F, the said passage having a valve seat t reeiprocative, movable part thereon, of a re e provided therein, with a ball check valve u l coil absorber, including a tubular Shell consented thereon. In this form, the recoil of nected to. the fire-arm, a like tubular shell the rifle is practically entirely absorbed by fitting the same and connected to the movthe spring, the air flowing freely out able part, a packing ring between the two through the check valve, While the return shells, and a tubular member having screw- 64 movement will be deadened by the pneuthreaded engagement with the inner shell matic vcushion and. the undesirable kick of and also having a flange adapted to tighten zo the spring eliminated. the packing ring.
It will be evident that the invention may 5. In a tire arm, a recoil absorber includbe applied to absorb the recoil of practically ing two tubular shells fitting air-ti ht, one 7U any part of a lire arm, and changes within Within the other, one of said shel: being the scope of-the appended claims may be provided with an outlet passage-way, of a made, Without departing from the spirit of check valve in the outlet passage-Way ada tthe invention. ed to permit' the egress but prevent the 1nl.. In a rifle or shot gun, the combination hers normally distendlng' the same. With the butt of a reciprocative butt plate, 6. In a lire-arm, the combination of a respring means for normally retaining the cprocative cushioning butt plate With a resame in outermost position, of collapsible ciprocating grip plate on the forward part respectively to the butt and to theibutt plate movement of the grip plate. and adapted to permit the air to only gradu- 7. In a fire-arm, the` combination. vt-ith ally flow in and out during their collapse reciprocative butt plate, spring 'menne for and distention, whereby a pneumatic cu'shreturning it to normal position 'when moved ion Will be provided to the movement oi the therefrom,'and pneumatic means for returd- 85 butt plate both ways. ing the movement thereof, of a reciprocative 2'. In a rifle or shot gun, the combination grip plate on the forward pai-t of the stock 40 with the butt and reciprocative butt plate, 11d 111651118 for Offeiin a spring and pneuof two co-actng telescopic shells connected matic resistance to tie movement' of the respectively to the butt and the butt late Same. 90 and fitting closely .to eachother, and a'ap'- I In Witness whereof I have hereunto set J my hand in the presence of two Witnesses. GERGE EASDALE. l li'sTi-tnesses distention, .and a spring Within the shells g RUSSEL S. Sinner, normally dlstendlng the same g WM. G. WYMAN.
in and out, whereby a pneumatic resistance What I claim as my invention is: gress of air, and a spring4 Within the mem-` 75 co-acting airaetaining members connected of the'stock, and means for cushioningthe Oe