US1290834A - Extractor mechanism for firearms. - Google Patents

Description

EXTRACTOR MECHANISM FOR FIREARMS.

APPLICATION FILED mu 21.1915.

G. HAMMOND.

Patented Jan. 7, 1919.

WITNESSES- m nan: mm nrwmunm. Iummmw IN VENTOR.

v/ 11' J ORNEY.

, citizen ofthe .United UNITED STATES PATENT OFFICE.

GRANT HAMMOND, OF HARTFORD, CONNECTICUT, ASSIGNOB TO DALTON ARMS (303190-- RATION, NEW YORK, N. Y., A CORPORATION OF NEW YORK.

EXTRACTOR MECHANISM FOR FIREARMS.

Specification of Letters Patent.

Application filed. July 21, 1915. Serial No. 41,111.

To all whom it may concern:

Be it known that I, GRANT HAMMOND, a

of Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Extractor Mechanism for Firearms, of which the following is a specification.

My invention relates more especially to that class of devices employed for withdrawing a cartridge shell from the chamber in the barrel of the firearm, and an object of my invention, among others is to provide a device that is attached to the breech-bolt in a manner to preserve the strength of. the latter; and a further object of my invention is to so arrange the extractor that the entrance of dust and dirt within the chamber in the firearm shall be prevented.

One form of firearm embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which-- Figure l is a top plan view of a portion of a firearm embodying my invention with parts cut away to show construction.

b fig. 2 is a top plan view of the breech- Fig. 3 is a detail view in cross section through the breech-bolt on a plane passing through the band 15.

In the accompanying drawings the numeral 5 denotes the stock of my improved firearm, 6 the barrel, and 7 the receiver to which the barrel is secured in any suitable manner. In the constructlon hereln shown a locking groove 8 is located in the receiver between the end of the barrel and a shoulder in the receiver, and releasing grooves 9 extend from the locking groove lengthwise along the receiver, along which grooves lugs States, and a resident A breech-bolt band 15 extends around the breech-bolt within a groove 15, the ends of shaped groove 17 in a lug 18 projecting from the underside of the extractor 19. This extractor is mounted upon the side of the breech-bolt, as clearly shown in Fig. 1 of the drawings, and it has an extracting lip 20 at its forward end, a recess 21 just back of the lip and within which one of the lugs 10 may pass, and a retaining lip 22 at the end opposite the extracting lip 20. The retaining lip 22 projects into agroove 23 formed in the outer surface of the breechbolt and extends partially therearound, the engagement of the lip 22 within the groove 23 retaining the extractor in place especially when the breech-bolt is removed from the firearm. When the extractor is engaged with the outturned ends 24 of the band 15 it is moved endwise and the retaining lip 22 will spring into the groove 23, the spring qualities of the extractor being suiiicient for this purpose.

The firing end of the breech-bolt, that is, that end which rests in contact with the cartridge shell, is free from any grooves or cuts, and it is therefore of maximum strength having no features tending to weaken it, the extractor resting against the outer surface of the bolt and such means as are required to attach the extractor to the bolt being located at such distance from the firing end as not to affect the strength of the bolt.

The extractor may be cut away as at 25 for the purpose of reducing its weight.

It will be noted that when the breech-bolt is in its closed position as shown in Fig. 1, the groove 9 on that side of the receiver on which the extractor is located is entirely closed, the thickness of the extractor at this point being substantially equal to the depth of the groove to effect this purpose and prevent the entry of dust, dirt and other impurities within the chamber back of the barrel.

While I have shown and described herein a satisfactory construction embodying my idea this may be departed from to a greater or lesser degree and yet be within the spirit and intent of the invention, which is not, therefore, limited to the details of construction herein shown.

I claim- 1. A breech-bolt, said bolt having an un- Patented Jan. 7, 1919.

' cut firing end, an extractor extending 7 to its forward end against the outer'surtace' I co pies of this fiatent Inay be obtained for lengthwise of the breech-bolt and resting as of the bolt and having ane'xtracting lip" and a T-shaped groove on 1ts under surface openlng rearwardly, a hand su'rroundlng the breech-bolt and having outturne d ends engaging said "I'd-shaped groove, and engaging means between the rear part of the extractor and breech-bolt to prevent movement of the extractor lengthwise of the breech-bolt. I

' '2. A breech-bolt, said bolt havingan uncut firing end, an extractor extending length wise of the breech-bolt and resting as to its forwardend against theouter surface of the bolt and having an extracting lip at its up?- per end, a T-shaped groove on its under, sur

face openlng rearwardly, a band surround ing the breech-bolt and having outturned ends to engagesaid T-shapedgroove, and a,

liia atthe rear Part of the extractor engagingwithin a groove in the side of the breechbolt to prevent movement "of theextr'a'ctor lengthwise of the breech bo'lt."

7 A breech-bolt, said bolt having'anuncut firing end, an extractor extending lengthwise of the breech-bolt and resting as to its forward end against the outer surface of the bolt and'havingian extracting'lip at its forjmoveinent' of the extractor lengthwise of th breech-bolt.

v GRANT VHAMMONDQ Witnessesz e e i ARTHUR B. JENKINS,

five te ts each, by addresinthe Comifies ioii er: of fatente'." j Washington, D, G

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