US1672540A

US1672540A - Extractor mechanism for bolt-action firearms

Info

Publication number: US1672540A
Application number: US178868A
Authority: US
Inventors: Lovell H Page
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-03-28
Filing date: 1927-03-28
Publication date: 1928-06-05
Anticipated expiration: 1945-06-05

Description

June 5, ,1928. 1,672,540

L. H. PAGE- EXTRAcToR MECHANISM FOR BOLT ACTION FIREAR'MsE' Filed March 28, 1927 g Z6 2220 I? Patented .lune 1928.

LOVELL H. PAGE, OF HAMDEN, CONNECTICUT.

EXrRActro MECHANISM son BOLT-ACTION FIREARMS.

Application filed March 28, 1927. Serial No. fleece. I

This invention relates to improvement in extractor mechanisms for bolt-action firearms and has for its object the production of a simple, reliable and rugged mechanism 5 of theclass described.

'A, further object of this invention is to provide an extractor mechanism which may be readily installed and removed from the firearm.

1O lVith these objects in view, my invention consists inan extractor mechanism for boltaction firearms characterized by an extractor-bar provided near its rear end with a laterally-projecting locking-lug; a bolt provided with a longitudinal chamber for the reception of the extractor-bar and with a laterally-extending passage intersecting the said chamber for the reception of the said locking-lug; and a springfor normally holding the said locking-lug in the said locking-passage.

My invention further consists in an extractor mechanism for bolt-action firearms characterized as above and having certain other details of construction and combinations of parts as will be hereinafter described and particularly recited in the claims.

In the accompanying drawings:

Fig. 1 is a broken View in side elevation of the forward end of a bolt provided with my improved extractor mechanism;

Fig. 2 is a View thereof in front end elevation;

Fig. 3 is a transverse sectional view on the line 3-3 of Fig. 1; v

Fig. 4 is a top or plan view of one of the extractor-bars Fig. 5 is a view thereof in side elevation;

and i Fig. 6 is an enlarged broken view in horizontal section showing the bolt, receiver,

and gun-barrel of a firearm provided with an extractor mechanism embodying my invention.

In the embodiment of my invention herein shown, I employ a pair of substantiallycylindrical corresponding complementary extractor-bars 10 having their forward ends beveled as at 11 and each provided upon its inner face with a notch 12 for engaging the rim 13 of a cartridge 14, which, as usual, is

located in the bore 15 of the gun-barrel 16.

As is the ordinary practice, the gun-barrel 16 is threaded into the internally-threaded forward end of the receiver 17, as shown in Fig. 6. i Y The inner face of each extractor-bar is cut .away to form a clearance-notch 18 which provides a flat'bearing surface for a. helical spring 19. The rear end of the outer face of, each of they extractor-bars is also formed with a notch 20 which results in the formation of a fulcrum-shoulder 21, the function of which will hereinafter appear, and also provides a flat seat for a laterallyprojecting locking-lug 22 which is provided with ashort shank 23 projecting through a lateral bore 24 in the rear end of each extractor-bar where it is riveted over as at 25, so that the locking-lug virtually becomes a part of the extractor-bar to which it is attached.

The bolt 26 is of the ordinary type and, as shown, is provided on opposite sides of. its vertical center with two longitudinallyarranged. extractor-

chambers

27 and 28, the outer wall of-each of which is intersected at its rear end by a locking-passage 29, while the inner wall thereof is intersected by a transversely-arranged spring-chamber 30 extending between the said extractorchambers and arranged in line with the locking-passages 29 aforesaid.

In assembling the extractor-bars 10 in the bolt 26, I first insert one of'themfthrough the front end of either one of the

extractorchambers

27 or 28 until its locking-lug 22 is in line with'one of the. locking-passages 29. The spring 19 is now. inserted into the spring-chamber 30 through the opposite locking passage 29 and compressed by' a suitable tool, after which the complemen tary extractor-bar is inserted rearward through the forward end of the opposite extractor-chamber until its locking-lug 22 is in line with the locking-passage 29 of the chamber in question.

As thus installed, the single spring 19 serves to hold the locking-lugs 22 of the respective extractor-bars in the respective locl ing-passages 29 and permits the outer ends of the respective extractor-bars to swing outward upon their fulcrum-shoulders 21, as may be required to permit the notches 12 to be engaged with and disengaged from the rim 13 of the cartridge 14.

Should it be necessary for any reason whatever to remove the extractor-bars from the bolt, it is only necessary to force one of the locking-lugs 22 inward to clear it from its locking-passage'29 and then. draw the extractor-bar, of which it forms a part,'f0rward and out through the open forward end of the particular extractor-chamber in; which.

the extractor-bar is housed. The removal of this extraetor-baras just described-will permit the spring 19 to beremoved laterally outward through the lockingpassage'29' just vacated, after which the remaining ioeking-bar may be readily removed by disengaging its locking-lug from its adjacent locking-passage 29 and in turn drawingiit outward through theforward end of the other longitudinal extractor-chamber.

I claim: Y

1. The combination with theibolt' of a bolt-action firearm; of two longitudinallyextendinge extractor-chambers respectively formed on the-opposite sides of the center of the said bolt ;a transverse locking-passage intersecting each of; the said extractor chambers near the rear ends thereof; two.

extractor-bars housed in the said extractor: chambers respectively with capacity for rocking-movement; a transversely-ofisetting locking-lug located near the rear end of each of the said extractor-bars; and a spring'impinging at its opposite ends against the said extractor-bars respectively for yieldingly holding the said locking-lugs. in the said locking-passages.

2; The combination with the bolt of a bolt-action firearm; of two longitudinallyextending extractor-chambers respectively formedfon the opposite sides of the'center of the said' bolt a transverse locking-passage intersecting eachqotthe said extractor,- chambers near the rear endi thereof; a spring-chamber formed in the said bolt'in line with the said locking-passages; two "extractor-bars housed in the said extractorchambers respectively," with capacityv for rocking movement; a transversely-oflsettingi locking-lug nearv the rear end of 'each of the said eXt-ractor=bars; a spring-chamber formed in the said bolt in line with the said:

7 specification.

lockingpassages; and a spring located in the said spring-chamber and adapted to impinge at its oppositerends against the said extractor-bars for holding the said lockinglugs in.the said locking-passages.

3. The combination with the bolt of a bolteaction firearm; of two longitudinall extending extractor chambers respective y formed on the opposite sides of the center of the said bolt; a transverse locking-passage intersecting each of the said extractor-cham- I bers near the rear ends thereof; two ex tractor b arshoused in the said extractorchambers respectively with capacity for rock] ng movement a a transversely-offsetting locking-lug locatednear the rear end of each of the said extractor-bars; and a spring impinging at'its opfulcrum-shoulder formed upon each of the said extractor-bars;

posite ends against the said extractor-bars respectively for yieldingly'holding the said located near the rear end of 'each'of the said extractor-bars; and a spring located 'inthe aforesaid spring-chamber and impinging at its opposite ends against the said extractorbars respectively for'yieldingly holding: the

said locking-lugs in the said locking pasi sages.

In testimony whereof, I have signed'this LovELL HPAGE? I