US1311715A - Firearm - Google Patents

Description

HREABM.

Patented July 29, 1919.

4 SHEETS-SHEET ebaa'k A TTORNE rs W g Q n F W. E. ROSEBUSH.

1,31 5. APPLICATION FILED NOV. I'EI. 9n.

WITNESSES Tub COLUMBIA rLANnGmPH cu. Wasuwa'run. IL c.

W. E. ROSEBUSH.

FIREARM.

APPLICATION FILED nov.19. 1911.

Patented July 29, 1919.

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FIREARM.

' 5' APPLICATION FILED NOV. I9. I91!- Patented 29 4 SHEETS-SHIN 3.

INVENTOR WITNESSES Mifiaseasb A TTORN E 78 W. E. ROSEBUSH.

FIREARM.

AFPLICATlON FILED NOV. 19. ten.

Patented July 29, 1919.

4 SHEETS-SHEET 4 IN l/EN TOR WEfZareJm/h WITNESSES m M M T T n cc, WASHINGTON, n c.

, is to force the WALDO E. ROSE-BUSH, OF APPLETON, WISCONSIN.

FIREARM.

Specification of Iietters latent.

Patented July 29, 1919.

Application filed November 19, 1917. Serial No. 202,747.

To all whom it may concern Be it known that I, Wnmo E. Rosnausn, a citizen of the United States, and aresident of Appleton, in the county of Outagamie and State of Wisconsin, have invented a new and Improved Firearm, of which the following is a full, clear, and exact description.

The invention relates to recoil operated breech loading hand firearms, such as shown and described, for instance, in the application for Letters Patent of the United States, Serial No. 117,660, filed by me on An 'ust 30, 1916.

'fhe ob'ect of the invention is to provide a. new an improved firearm arranged to permit of securely locking the barrel receiver to the main frame and to allow convenient disassembling of the said parts for repairs, cleaning or other purposes. Another object breech block back automatically when disassembling the parts to cause the extractor to clear the barrel and thereby permit removal of the barrel from the receiver without completely disengaging the barrel receiver from the main frame. Another object is to cause the hammer spring to acton the magazine catch. Another object is to permit of adapting the magazine to long rifle cartridges as well as to short cartridges and without danger of the bullets jamming in the magazine. Another object is to securely hold the wooden handles in position on the handle portion of the main frame by simple, efiicicnt, interior means.

Other objects will readily appear from the detailed description of the firearm.

A practical embodiment of the invention is rcprescnted in the accompanying drawings forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the firearm;

Fig. 2 is a plan view of the same;

Fig. 3 is a side elevation of a. portion of the firearm with parts in section and with parts partly disassembled;

Fig. 3 is a similar view of the same with the parts in a further disassembled position;

Fig. 4 is a longitudinal central section of the firearm with some of the parts shown in elevation; Fig. 5 is a similar view of the same with the breech block 111 recoil position;

Fig. 6 is a sectional plan view of the same on the line 6-6 of Fig 4;

Fig. 7 is a perspective view of the breech block;

Fig. 8 is a similar view of the barrel receiver;

Fig. 9 is a similar view of the main frame;

Fig. 10 is a perspective view of the back strap;

Fig. 11 is a similar view of the extractor with the parts in disassembled position exthe spring; Y

g. 12 1s a perspective view of the firing P Fig. 13 is a similar view of the bearing for the firing pin;

Fi 14 is a cross section of the firearm on the line 14-44 of Fig. 4;

Fi 15 is a similar view of the same with the arrel in unlocked position read for removal from the barrel receiver;

Fig. 16 is a perspective view of the barrel;

Fig. 17 is a perspective view of the looking device for the magazine;

Fig. 18 is a perspective view of the locking lever for locking the breech block in recoil position after the last cartridge has been fired;

Fig. 19 is aperspcctive view of the controllingpiece for the sear;

Fig. 20 is aperspective view of the sear;

Fig. 21 is a similar view of the trigger;

Fig. 22 is a like view of the hammer;

Fig. 23 is a side elevation of the magazine;

Fig. 24 is a perspective view of the magazine follower;

Fig. 25 is a. plan view of the magazine;

Fig. 26 is a sectional plan view of the same on the line 2626 of Fig. 23;

Fig. 27 is a cross section of the same on the line 27-27 of Fig. 23 and showing the cartridge in position in the magazine;

Fig. 28 is a cross section of the magazine on the line 28-28 of Fig. 23:

Fiv. 29 is a cross section of the wooden hand 'le, locked in place at its upper end on the main frame hp the barrel receiver, the secgion being on he line 29-29 of Fig. 1; an

Fig. is a similar view of the lower end of the said wooden handle in position on the handle part of the main frame.

The main frame 40 of the firearm is provided with a suitable handle 41 and a trigger uard 42, as piainlyshowh in Fig. The forward end of the main frame 40 18 provided with integral half round pivots 43 adapted to be engaged by correspondingly shaped notches 44 formed in the sides 45- of a barrel receiver 46 (see Figs. 1, 3 and 8) to permit of swinging the said barrel receiver 46 into and 'out'of frame 40 when assem ling'ordisassembling the firearm. The sides 45 fit snugly over the sides of the main frame40-so asto hold the parts mounted on the said-frame against accidentail displacement. The-barrel receiver 46 is provided with a central bore ff-into which fits the reduced rear'end 48of-the barrel 49 provided with a shoulder 50 abutting against-the forwardend-ofthe barrel receiver 46, as plainly indicated in the drawings. The reduced ortion 48 of the barrel 49is provided on't etop and-bottom'with' two sets of spaced lug's 5111111152 adapted to pass through longitudinal recesses 53 formed in the side walls-'of the bore 47 of the barrel receiver 46, and the said lugs 5E and152 are adapted toister with tflansverse recesses 54 and orme'd in the top and bottom of the"wttll-ofthef-bore 47; In placing the barrel 49 in'po'sition on the bar rel receiver 46 m that the lugs-'51- an'cl 5-2 are made to register with thedengitfldinal recesses 53 to permihofpassing the reduced portion 48 of the barrelinto the bore 47 until the shoulder 50 'abutsagainst the forward end of the barrelreceivei Hi-11nd the lugs 51 and 52 are -i'n"-register with the recesses 54 zir'id'55. A quarter turn is" now given to tlte'ba'rrelso" that tlldlll =51 and 5:2 pass into the recesses 5-1 and 55 t ius'look ing the barrel against longitudinal displacement in the barrel receive1"-46 (see' for comparison Fi '14 and T5}? The rear? end of the reduce portion l8f-of the barrel '49 is flush with the rear end ofthe' barrel' receiver l6, and is providedat the bottom with a beveled lug fitting into a notch 6T formed-in the top of a lug-62' which is an integral part of the main frame 46), as plainly shown in Fig. 9. Thebaekof the lug 69/ is beveled'to correspond to the'bevel of the lug 60 to'guide a ca'rtridg'ejint o the bore 63- of the bin-ear as hereinafter-more fully explained. ftwlll als'o be noticed that by the'lug 60 eiigaging the notch 61the barrel 491s held ag'dirist aceidental turning when the parts are assembled and the firearmisinuse.

'On the upper edges of th'e'rear portions of the sides 45 of the barrel receiver 46 is mounted to slide forward and" backward a breech block 70 provided with a forward ex tension in the form of two side bat-s71 and 72 (see Fig. 7) connected with each other at their forward end by a crossbar 73. The lug 62 of the main frame 40' previously mentioned fits between the side bars 71 and 72 "block 70 is extending tongue 74 mounted to slide on a position on the main and thus aids in guiding the breech block 70 in its forward and backward sliding moven'icnt. The under side of the breech provided with a longitudinally 70 guideway 75 formed on the top of a lug 76 ntegral with the main frame 40 at the rear end'thereof (see for comparison Figs. 7 and 9).-- 'Ihe'forward end of the tongue 74 is adapted to engage and push a cartrid e into the barrel 49, as hereinafteranorefiilly explained; J The forwardend of the left-hand side of the-guidewa 75 forms an ejector 77 adapted to be engz ed by the rim of an empty shell'extracteg from the barrel to insure a sidewise defleetion of said shell to the ii men 'the reeoil actionuof the breech block 0, as hereinafter described.

The breeehblock -70 is heldwnormallydn a forward; 'tion bythe-action of a breech hlook'sprmg 80 extendin with 'its' forward portion into a tube 81- nm forms an extension of tl'ie cross'bar I73 previously mentioned, and the forward end of the spring 80 abuts against thefor ward end 82 of the tube 81." The-rea ward of the spring 80 bears against a'nut'83 hel'dbetween'the side bars 11 and 72= to prevent-the nutfrom turning but to allow the-nutto slide betweenthe said side bars'ilia'nd 72: The nut 83 screws on the rearportion of a locking and guide rod 84around which the-'sprin 80 is coiled, and the guide rod extends wit .its forward end througlnthe forward end 82 of the tube 81. The forwardend of the locking rod- 84 ter- 10o minates in a handle-85. By the -a rrangement described a long breeclr block spring. may be used and the tension thereof adjusted by turning the'rod to screw the nut 83 forward or backward between the side bars 71 and 72. fThe'rear end of the locking rod 8-1 tends through :1 depending lug 86 integral with the under side of the barrel receiver 4'6 andabutting against'the front of the abutmentlu'g 6i. of-the mainframe-l0. The rear terminal of the looking rod 8-! extends into a recess 87 formed in the lug 62 of the main frame40'. Thus by the arrangeu'lent described the rod 84 forms a guide for the breech block TOand also forms a locking device for 'locking 'the barrel receiver 46 in position on the main frame 40, that is, to prei ent the barrel 'recei ver 46 from swinging upward on the main frame 40. In order to unlock the barrel-receiver 46' it is necessary-for the operator to pull forwardly on the luindle 85 (if-the rod=84 to disengage the rear end thereof from the recess 87 in the lil 62.

' when it is desired to push the breech block *TOrearwardly by hand for loading the firearm'by-liaudor for other purposes then the operator takes hold of the roughened sides of thebreech block 70 and pushes the same rearwardly against the tension of the spring 80. The tube 81 (projects through a recess or notch 88 forme between two lugs 89 integral with the forward end of the main frame 40 and carrying the pivots 43 previously mentioned. he bottom of the notch 88 is rounded off in a downward direction (see Figs. 3, 4 and 5) to permit a slight tilting of the breech block as indicated in Figl. 3 and to prevent dentin or binding of t 1e tube 81 and pinching o the recoil spring while disassembling the firearm. The forward face of the crossbar 73 of the breech block 70 normally abuts against the backs of the lugs 89 and hence when the barrel receiver 46 is tilted upwardly th 1 a slight rearward movement is automati ly given to the breech block 70 for the purpose hereinafter more fully explained (see Fig. 3*).

The rear ends of the sides 45 of the barrel receiver 46 are locked in place by the use of a back strap fitting into a recess in the back of the handle 41 of the main frame 40. The lower end of the strap 100 is pivoted at 101 to the handle 41 and the up r end of the said back strap 100 is providfd with forwardly extending lugs 102 (see Figs. 3, 4, 5 and 10 fitting the sides of the main frame 40 an terminating in catches 103 en aging shoulders 104 formed on the rear e ges of the sides 45 of the barrel re ceix er 46 thus holding the barrel receiver locked in position at its rear end. The back strap 100 is provided with a recess 105 in which is arranged a hammer spring 106 pressing with its upper end on the under side of a plunger or head 107 mounted to slide in the recess 105. The top of the plunger 107 is provided with a concave recess 10S engaged by the lower end of a link 109 pivotally connected at its upper end at 110 to the heel 111 of the hammer 112 mounted to swing on the pivot 113 mounted on the main frame 40. The hammer 112 is adapted to engage the firing pin 114 mounted to slide in the breech block 70 to fire the cartridge 115 held in the rear end of the barrel 49 at the time. The bottoms of the lugs 102 of the back strap 100 normally rest on lugs 116 formed integral with the sides of the main frame 40, as plainly indicated in the drawings. The lower end of the hammer spring 106 bears on an arm 120 projecting at an angle from a catch 121 provided with trunnions 122 (see Figs. 4 and 17 mounted to turn in the back strap 100. he catch 121 extends downward through the handle 41 and its lower end is provided with a plate 123 adapted to engage the under side of the bottom 124 of a magazine 125 removably held in the handle 41. By the arrangement described the hammer spring 106 controls the hammer 112, the catch 121 and the back strap 100 owing to the fact that the catch 121 is pivoted on the back strap, as will be readily understood by reference to Fig. 4. The back stra 100 is provided with a rearwardly exten ing fingerpiece 126 to permit of conveniently swingin the back strap 100 rearwardly against t 1e tension spring 106 whenever it is desired to disengrage the catches 103 from the shoulders 104.

he fingerpiece 126 is also adapted to be engaged by the fin er iece 127 of the hammer 112 to lock the ac strap 100 in its normal forward position when the hammer 112 is cooked, thus preventing disassembling of the firearm while the hammer 112 is in cocked position (see Fig. 5). It will also be noticed that the frame 40 and the barrel receiver 46 are locked together when the.

hammer 112 is cooked as the hammer 112 cannot be completely cocked if the back strap 100 is not in its normal forward position. When the barrel receiver 46 is in locked position the tops of the lugs 102 of the back strap 100 fit against the under side of the breech block 70 thus preventing a rearward swinging movement of the back strap 100. It wi ment the back strap 100 cannot be swmr rearwardly as long as the firearm is used an the breech block 70 is in normal position, but when the firearm is to be disassembled, the operator first resses the fingerpiece 126 and thereby swings the back strap 100 rearwardly to dissengage the catches 103 from the shoulders 104 (see Fig. 4) and then the breech block is slightly swung upward, as

previously explained. The operator can now swing the barrel receiver 46 farther npward into the position shown in Fig. 3, after which the barrel 49 can be removed from the barrel receiver 46 in the manner previously explained.

The firing pin 114 has its forward end mounted to slide in a bearing 130 formed in the forward end of the breech block 70, and the firing pin extends through a bore 131 formed in the breech block 70, as plainly shown in Fig. 4. The firing pin 114 is provided adjacent its rear end 132 with a collar 136 against which abuts the rear end of the fillllf pin spring 134 resting with its forwar end on the forward wall of the bore 131. The rear end 132 of the firing pin 114 is mounted to slide in a bearing 135 provided with a flat base 136 (see Figs. 4 and 13) en aged at the top by a flat bottom portion 137 isee Figs. 4 and 12) of the collar 133 to hold the firing pin 114 against turning. The bearing 135 is inserted into the bore 131 through an aperture 138 formed in the bottom of the breech block 70. The terminal of the rear end 132 of the firing pin 114 projects a short distance beyond the rear face of the breech block 70 for engagement by the hammer 112 when the firearm is fired.

The breech block 70 is provided at its right hand side (see Fig. 6) with a bore 1 be noticed that by this arrangeof the 150 in the forward end of which isarrar'igcd the extractor 151 having its hook 152 pmjecting beyond the forward 'end o f the breech block to pass inth a recess 153 formed in the rear end of the reduced portion 48 of the barrel 49 with a View to engage the rim of the cartridge 115 in posi tion at the time in the rear end of' the barrel. The extractor 151 is prot'ided with an angular pivot 1)01lL1011 154 extending into a recess 155formed in the wall of the'bore 150 to allow the extractor 151 to swing inorder to pass over the rim of the cartridge 115 dilring the return stroke of the breech block 70. The heel of the extractor151 is engaged by a shoulder 156 formed ona plunger or head 157 mounted to slide in the bore 150 and pressed on by a spring 158 held inthe rear end of the said bore. By thearrange ment described, the extractor 151 is spring pressed to firmly engage its hook 152 with the rim of the cartridge 115. The plunger or head 157 is provided with a rearwardly extending pin 159 extending into the open ing of the spring 158 to hold the latter in proper centered position. The extractor 151 can be readily removed from the bore 150 by first pressing the plunger 157 'rL'arwatdly in the bore and against the tension of its spring 158 to allow of llft-ll lg the pivot 154 out of the recess 155' and then allow of withdrawing the extractor 151 through the forward end of the bore 150. The plunger 157 and the spring 158 can then also he removed from the bore.

The sear 170 in construction and action is practically the same as the one shown and described in the application for Letters Patent above referred to so that further detailed description of the same is not deemed necessary, it being understood. however. that the forward end of the sear 170 is pressed on by a spring 171 to normall hold the sear 170 in rearmost position to engage the hammer 112 and to hold the same in cocked position. The spring 171 is mounted on a pin 172 provided with a head 173 having a transverse knife edge bearing on the front wall of a slot 175 formed in the main frame 41. The knife edge 174 allows a free up and down rocking movement of the sear 170. The rear end of the sear 170 (see Fig. 4) is provided with a rounded off pivot 176 extending loosely into a transverse bearing 177 formed in the inain frame 41 to allow the sear to rock up and down and also to allow forward and rearward movement of the said sear. The rear pivotal end 176 of the scar 170 is provided with a tooth 17S adapted to engage a shoulder or notch 179 on the heel 111 of the hammer 112 to hold the latter in cocked position. The scar 170 is provided near its forward end with a square shoulder 1S0 adapted to he e'i'igaged by a projection 181 formed on the trIgger 1S2 fulcrumed at 183 in the main frame 40.

The trigger 182 is provided with a fingerpiece 184 'cltleh'd'ing'into the trigger guard 42 to be iftoliveiiient position Totth opel'atoi sliigier for pFessih the triggei when ever it is" seen to nlot' "the"seail'itlffor- \v'aid againsruwteiision of'thespi'ing 171 to release the han'nner 112 farm-aw purposes.

Iii order to'pteveht the'fii-earm ram being fired'except when the breech block is completelyfind'tiglitly'closed; the following ariilngeineiit is'itiitdefoh the top of the sear 170 in'the front of thesllonlder 180 is arranged 'a' cofitrollin safety plcce200' (see Fig: 19) af-Uslmpeiitd ha'vir'ig its arms 201 itlounted to Slide iii recesses 202 formed in the sides o'f'the'fflaili fran'ie 41- (see'Fig'. 9). The'iipper rounded oif ends of'th'e arms 20] are adapted to engage'iaacimg eoa formed in the underside of the sidebars 71'and 72 ofthe breech block 70 (see Fig. 7): When the bree'ch'block wifiotesienavara tll'thl the masher 203 pass out of engagementwin. the arn'is 201.and'the1idttoins (it the side l'JilXS 'Tl' an'd 72' now ress the controlling piece QOOdbWrtWa'I-(ltiritl with ittlic sear 170 rocking were beating 1m.

It is undei'stoodth'dt the hi ceeh block 70 moves rear-wardi- 'o'1'i the recoil action of the fired gun (see ig; 5) and in doing so the rear end of the bi'eeclth'lock 70 ii'n'ph'i'ts a rearward swinging movement to the ham mer 112 whereby theliammer is' cocked and held in position by the sear 170 while the breech block 'ZO immediately returns to its forward position by the action of the spring 80. When theoperatol' presses the fingerpiece 184 of thei-trigger18 2 then the sear 170 releases the hammer 112 which swings forward bv the action of its spring 106 to Cause the tiring pin 11 1 to fire the cartridge 1.15 in the barrel 4-9. The seat 170 is forced rearward by the spring 171 as soon as the pressure on the rear end of the sear 170 is relieved by the release of the hammer 112.

The-magazine 125 '(s'ee' Figs. 4 and 23 to 28, inclusive) is removably held in the handle 41 and is adapted to hold short and long cartridges 115; saj '22 caliber, as illustrated in Fig. 27, or the magazine is adapted to hold the regular 32 caliber rimless automatic cartridgesmow generally used in the ordinary automatic firearm. For the purpose mentioned, the ma zfne 125 is provided in its rear portion with a filling piece 210 extending from thebottol'n 124 to the top of the magazine 125 to narrow the available space within the magazine for short cartridges 115, as will bereadily understood by reference to"-Fig.- 4. For longer cartridges this filliiig piece 210 is'removed'from the Magazine to provide additional space for the increased lengt lrof suclrca'rtridgesi' To aceomr'iro'date 32 caliber cartridges, the magazine'is"provided'ivith straight sides instead of the inwardly bent sides shown in Fig. 26. It is understood that when using cartridges of difl'erentcalibers it is necessary to use barrels 49 with correspondingly rigid bores 63. The cartridges 115 are forced upward in the magazine 125 by a follower 212 pressed on by a spring 213 resting with its lower end on a guide 214 seated in a seat 215 formed in the upper face of the bottom 124. The guide 214 serves as a locking means to hold the bottom 124 against accidentally sliding out of the lower end of the magazine, and when it is desired to remove the slidable bottom 124 it is necessary first to unseat the guide 214 from its seat 215 by the use of a suitable tool introduced through an aperture 216 formed in the bottom 124 and leading to the seat 215. The bottom 124 is provided at the sides with guideways 220 engaged by inwardly pressed lugs 221 on the lower end of the magazine 125 (see Figs. 23 and 28). The follower 212 is providedwith a fingerpiece 225 projecting through slots 226 formed in the magazine 125, and the fingerpiece 225 pro'ects into the path of a transverse lug 227 (see Figs. 18 and 26), formed on the rear end of a lever 228 ivoted at 229 on the main frame 40. The ever 228 is provided with a finger-piece 230 which extends into the top of the tri ger guard 42 to be within convenient reac of the operator, and a spring 231 (see Fi 4) is interposed between the trigger 182 and the lever 228 to render both the trigger and the lever spring pressed with a view to cause the same to return to normal positions after being first pressed and then released. The rear end of the lever 228 is provided with a lug 232 adapted to engage a recess 239 formed in the under side of the side bar 71 (see Fig. 7) to hold the breech block in recoil position after the last cartridge is fired owing to the action of the fingerpiece 225 on the lug 227 and which action causes an upward swinging movement of the lever 228 to cause its lug 232 to engage the recess or notch 239 at the time the breech block 70 reaches a recoil position after the last cartridge is fired. It is understood that when the last cartridge leaves the magazine 125 the follower 212 moves into uppermost position and with it its fingerpiece 225 whereby the latter engages the lug 227 and swings the lever 228 upward against the tension of the spring 231.

The up er ends of the rear portions of the sides of tie magazine are bent inwardly to form retaining lips to guide the uppermost cartridge when pushed forwardly by the returning breech block 70. The upper forward portions of the sides of the magazine 125 are provided with resilient centerin lips 241 extending inwardly (see Fig. 25% to hold the uppermost cartridge pro erly centered relatively to the bore 63 c. the

barrel 49 at the time of ushing this uppermost cartridge 115 into tihe said barrel bore.

The fingerpiece 225 is also used to push the follower 212 downward to ermit of loading the magazine with cartri es from the to it being only necessary to rep the cartri ges one by one into the magazine while pushing the follower correspondingly downward.

The handle 41 is provided on each side with a wooden grip 250 rovided on its inner face with an integral ofi'set portion 251 fitting into an openin 252 (see Fi 9, 29 and 30) formed in the andle 41. T 1e offset portion 251 projects at its upper end beyond the top of the face of the grip 250, and this top portion 253 extends un r the lower rear rtion of the corres nding side 45 of the arrel receiver 46. he lower edge 254 of the offset portion 251 is beveled and fits on a corresponding bevel 255 formed on the bottom wall of the opening 252 of the handle 41. When assembling the parts the hand grips 250 are engaged at their lower beveled edge 254 with the bevels 255, and when the barrel receiver 46 is swung into final osition its sides 45 overlie the tops 253 o the grips 250 thus securely locking the said handle grips in place without the use of screws or other similar fastening device. The forward end of. the barrel 49 is provided at the top with a suitable front sight 260, and a rear si ht 261 is arranged on the top of the breech lock 70.

The operation is as follows: lVhen the several parts are in the position shown in Figs. 1, 2, 4 and 6 with the magazine 125 filled with cartridges and one being in the breech of the barrel, then the o erator first moves the hammer 112 into coc ed position and then presses the fingerpiece 184 of the trigger 182 to move the sear 170 forward and thereby which by the spring mechanism is caused to swing forward and strike the firinv pin 114 to fire the cartrid e. When this ta lies place the breech block 0 recoils and in doing so swings the hammer 112 back into cocked position. The empty shell moves rearward out of the barrel by the recoil of the exploded shell aided by the extractor 151, and when the rim of the empty shell strikes the ejector 77 it is deflected to the right and is thrown sidewise out of the space between the rear end of the barrel and the forward end of the breech block 70, as will be readily understood by reference to Fig. 5. During the return or forward movement of the breech block 70 the rim of the uppermost cartridge in the magazine 125 is engaged by the ton ue 74 of the forward end of the breech 1 lock 70 whereby the I PPermost cartridge is pushed forwardly out of the throat and from between the lips 241 of the magazine, and the cartridge is then pushed release the hammer 112 forward into the bore 63 of thebarrel 4 9. His that the breech block W is returned to its normal foremost, position by the aetion of its spring 89. On guessing the fingerpic'e 1;8& of the trig er 1 2 a seoond tin e the cooked, hammer i1 is released and a second shot is fired 'andg then the above described operation is repeated exoeptthat it is not neeessary for the operator to cook thehain ner 112w thig is done by the breech bIoek'ZO, when the laet eartridge in the magggfine 125. h s eet P shed; out of the m ga i eant r eh mt t i ba re by he retgrmnj re ch, 2103 7 en th timerp wep ee n the he .2 nd er lalst' earti'ridge is fired d: b

ea .9- iwi' re ward hen e u 2 o he lev r- .8. s. s t WW I 2 9 thi 1 3 3 the ne h k O- n, ree no i s t e awn hid cet i e t tl e $9. e i e im' hi t the l W r d e. has bee fit i E-hp m 5- m y E en e fl fi y l. nd: wfilln -.1 l ert g nd, f ee ia edi i e ndle he r ch h ZO- an et ad gui eek d. on th 0 .1 la ge t 'a bi ee'n e '2 he lever 22 tp lsei hge-t 1e ln g 232, thus un locking hreech and allowing the 245 51 r t j t a mal g 'w fd. wag n I 0,1 z n 1 11.11 e stopd tha when the br e eh bloel; 70 is in the loelte ggsitiqi 's hqiyn in Fig. -5 a. ear wage; I be h ished mtothe rear end; of the bore 63 y hand,- if'it is desired todoso Then it is disassemble the firef t th 12mm l Preset h ne rie 125 m s i on page etnap 100 .1;ea;;\\ra :dly

and thug. e thechtehe's 103' from the shoulders 104 s Wing the breeeh hloel; 70,' slightly upwardly, as indicated in Fig. 3, after which. the operator iigitlid 'zurs the rod 84. frornthe recess $7. ofthe lug 62. A swingin mpxen ent can now be. given to the barrel reeivei 46. turning on the piyotg -13 and in doing so the forward end of the cross bar'73 of; the Breech block 70 travels up on the real; faceof the leg 8!.) whereby the breech bloeh 70 is puehed slightly rearwardly (see Fig.-3") for. the rear end: oil

the. harrel to elear the extractor 1'51 and for the lu 60fto disengage the notph 61 in the lug of the main frai'nedl to allow turning.- of the barrel 4} in the barrelreeeiyelr; 46. The barrel 49 ean no; he rernoyed frointhe barrel receiver. it by giving he een quarte -W t i ge h lugs 51 and 52 front the reeesses 5 and to more thelsaid, lu 51' into the recesses 53 to permit the reduee end 48 of the barrel to slide out of. the bore L7, on pulling the bafirel 4931i :1 forward direction. Itdesired, the barrelreceiver 46.:ith the barrel l9 and the breech block 70 niounted thereon can be completely disengaged from the frame 41 by.

swinging the barrel; receiver 4.6 into the position shown-in Fig.3 and then pnshing the same rearward and upward tov disengage the pivots 43. Ready is now had to the trigger n eehanisni, the seat; 170 and the various other parts for removal and inspee- 70 tion of the shine, if desired. The parts can be. readily aseemhled, -in rewjerse orderand the barrel receiver looked in plaee by the baek strap 100, as above explained. i When it is des red to remove therfollower 21,2 and the spring 213' fron the magazine 125 the o wratq u ls out he ea er ve ispl n the i e 2 nS-Pt'tr-iaqfib! e pla ned, to permit of temoring-theispring te t e f l w ry ay-o i hQ- QWBI' end of the u' agazjneq Hav nghu e cribed my mzentimi, claim as new anddesilge to, scour Letar tent arrel, a. arr l. ei er im hich. the b rrel. is removabl he d, ain fr me-01.1. whie he ewe rend-qt the barre heeeiivenwanted; tb sw ng, mid-e aek strep. me nted to swingn the mam.-

ngagm th en t e s idbaaarel: receiver t lock h la er n. plac on e main fume 2. a hand firearm, the oombination 05 a barrel, a barrel reeeiyei: in which. he. beam is remoi ably held, a reeoil operated bneech blpek slid able on the said.- reeeiver and having a slight up and down; swinging moveme t. n the me vee a main r me onwhich he t ward: nd? the bani-d r oeiven is mounted to swing, and aback steep; mounted to. sw ng-0. the main heme and engaging he a endht-t said-ba zre we1 n to 'l q e et e i p ac o the main fr me.

3, In a, hand fireai n'nthe. coinbination of a a n fir mc'pn d d w th apivobedback 1 strap having its free end! terminating-in an in teg nl; catch; and a hanrel receiver. mounted to swing on the said main frant c and providedat its rear-end with a keeper adaptedto be engaged by, the said catch, to. lock the barrel receiver in place on the. mainframe.

t. In. a hand firearn'n'the combination ofa main frame lizwing. a front lug. and a notched rearing, abanrel receiver, fulcrumed:

at its forward end on the said; front lug 6. In a hand firearm, the combination of a main frame, a barrel receiver fulcrumed at its forward end on the main frame, a back strap pivoted on the rear end of the main frame, the rear end of the said barrel rereceiver and the free end of the said back strap having locking means to lock the barrel receiver to the main frame, and a spring pressing the said back strap to normally hold the back strap in looking position relative to the barrel receiver.

7. In' a hand firearm,the combination'of a main frame, a barrel receiver mounted to swing on the said main frame, "a'barrel mounted on the said barrel receiver, arecoil operated breech block slidable'on thesaid barrel receiver and provided with a firing pin, a hammer pivoted on the main frame and adapted to engage the said firing pin, a spring pressing the-said hammer,-'and a locking device held on the rear end of the said main frame andf'engaging the rear-end of the said barrel receiver, the said lo'eking device being pressed by the hammerflspring,

8. In a hand firearm, thecombinat-lon of a main frame, a barreI-receiver-mounted to swing 'on the said-main frame, ya barrel mounted on the said-barrel receiver, a recoil operated breech block slidable onthe-said barrel receiver and provided with'a'firing pin, a ammer pivoted on-the main frame and adapted to'engage the said firing pin, a spring pressing the said hammer, a back strap fulcrumed at itslower endon thesaid main frame, the rear end of the said barrel receiver and the free end of the said back strap having locking means to lock the barrel receiver in position on the said inain frame, the said'hammer spring pressing the said back strap'to hold the same in normal position. j

9. In a hand firearm, the combination of a main frame, a barrel receiver mounted to swing on the said main frame, a barrel mounted on the said barrel receiver, a recoil operated breech block slidable on the said barrel receiver and provided with a firing pin. a hammer pivoted on the main frame and adapted to engage the said firing pin, a spring pressin the said hammer, a back strap fulcrume at its lower end on the said main frame, the rear end of the said barrel receiver and the free end of the said back strap having locking means to lock the barrel receiver in position on the said main frame, the said hammer spring pressing the said back strap to hold the same in normal position, the said back strap having a rearwardly extending fingerpiece.

10. In a hand firearm, the combination of a main frame, a barrel receiver mounted to swing on the said main frame, a barrel mounted on the said barrel receiver, a recoil operated breech block slidable on the said barrel receiver and provided with a firing pin, a hammer pivoted on the main frame and adapted to engage the said firing pin, a spring ressin the said hammer, a back strap ful crume at its lower end on the said main frame, the rear end. of the said barrel receiver and the free end of the said back strap having locking means to lock the barrel receiver in position on the said main frame, the said hammer spring pressing the said back strap to hold the same in normal position, the said back strap having a rearwardly extending fingerpiece and the said hammer having a fingerplece ada ted to engage the fingerpiece of the bee strap to hold the back strap locked when the hammer is in cocked positlon.

11. In a hand firearm, the combination of a main frame, a hammer pivoted on the said main frame and having a fingerpiece, and a back strap having a fingerpiece and pivoted on the said main frame, the said fingerpiece ofthe hammer being adapted to engage the fingerpiece of the back strap to lock the back strap when the hammer is in cocked position. 12.- In a hand firearm, the combination of a main frame, a hammer pivoted on the said main frame'and having a fingerpiece, a back strap having a fingerpiece and pivoted on the said main frame, the said fingerpiece of the hammer being adapted to engage the fingerpiece ofthe back strap to lock the back strap when the hammer "is in'cocked position, and aspring common to both the said hammer and the said back strap.

13. In a hand firearm, the combination of a main frame provided with spaced lugs, of which the front lug is'recessed and provided with a pivot, a barrel receiver mounted to swing on the said pivot, a breech block mounted to slide on the said barrel receiver and provided with a tube extending through the said recess in the front lug, a rod extending through the said tube and engaging the said rear-lug, and a spring interposed between the tube and the barrel receiver.

14. In a hand firearm, the combination of a main frame provided with spaced lugs, of which the front lug is recessed and provided with a pivot, a barrel receiver mounted to swing on the said pivot, a breech block mounted to slide on the said barrel receiver and provided with a tube extending through the recess in the front lug, a rod extending through the said tube and engaging the said rear lug, a spring interposed between the tube and the barrel receiver, and a spring pressed back strap on the rear end of the said main frame and engaging the rear end of the said barrel receiver to lock the rear end in place on the main frame.

15. In a hand firearm, the combination of a main frame, a barrel receiver mounted on the said main frame, a breech block slidable to swing on the said main frame and in" which the said barrel is mounted to turn, a recoil operated' breech block molmted to slide on the said barrel receiver, and coact-- ing Ineane'en the. saidf -rame andthe said barrel. receiver to. slide the breech block autematieall-y reerwardlyen the barrel: receiver ntilting the latter upwardlyto disengage theba rrel; lug from the firaane'lug and there by allerg turning of the. barrel inthebarrelzeceiwen forremoval of barrel and while the; barrel receiver is in; tilted position en the main frame.

17.]in afirearm, the combination of a main frame grovided its forward endwitlna, lug-an witha pwot, a, barrel, a barrel. receiver in which the barrel isremowablymounted', a retail operated breech block mounted to: slide ,on the: said barrel receiver and having a. shoulder abutting against thesaid, lugto slidethe breech block automaticallygrearvvardlfi ontilting the said barrel receiver ngivar y. on, the said pivot as the fulcrum, and an; extractor mounted on the 7 said breech block and normally extending into the end. of the barrel, the said extractor being free of the barrel at the time the barrelreceiver is in the aforesaidtilted and rearward position to, allow of removing the barrel from the barrel receiver while the latter is in. tilted. position on the main frame.

18..v In a, firearm, the combination of a main frame, a barrel, a 'barrel' receiver mounted to swing on-.the said main frame and in which the barrel is removably mounted, a. recoil operated breech block mounted to slide on the said barrel receiver, an extractor mounted onthe said breeclr block and normally extending-into the rearcnd 0 f the barreh'andcoacting means on the said frameand the barrelreceiver to slide the breech blockeutomatieally. rearwardly on tilting the s'aid'barrel receiver upwardly to free the extractor of the barrel to allow removed at the barrel from the barrel receiver while the latter. is in tilted position on the main. firamer.

19,111 a; firearm, the combination oi a frame heving-a'hamdle; ortion, a: barrel, a barrel receiver held-ant e= saidmainfirame and carrying thebarr el, e recoil-operated breech block slidnble on the said barrel receiver and providedwith air-inginga. lmnnmcr pivoted qn-lthe frame and apted to engage the isald firing pin, a hammer spring. pressing the saidhemmer, a, magezme' held-in the-said hand-lo portion a Melving devioeiffior the said magazine and by the seidnhammersprmg; and-a bwc -strap pivoted onthe said mam frame and locking the said barrel receiver to the said main frame the said back. strepr being pressed by the sand hammer spring.

20;. -In, a, firearm-, the-.combinetioh of a main. frame: having: a handle portion -provided 'vvith' a; transverse opening, the bottomwallof'which is beveled-inwardlyand downwardly; a barrel receiverremovably heldonthe .saidmain' frame and: having side members, and hand-grips overlying the said handle portion andeact. mvid'ed at it inner face with an integral boss fitting into the said opening, the upper endof'thelbossprojecting beyond the top of the grip and under tl1q.=eorresponding. side member of the barrel receiver, the lower-edge of the boss being beveiod'to. fit the said; beveled b0 ttom.

WALDO E. ROSEBUSH.

Washington, 10, 0!

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