US693823A - Air-gun. - Google Patents

Description

Patented. Feb. 25, 1902 A I R. G U N.

(Apfumion med sept. 11', 1901.)

(No Model{.)'

' 3mm/Mofa:

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UNITED STATES PATENT OFFICE.

VALTER R. BENJAMIN, OF ST. LOUIS, MISSOURI.

Al R G U N SPEGIFEGATION forming part of Letters Patent No. 693,828, dated February 25, 1902. Application filed September 11, 1901. Serial No. 75,086. (No modeli) To uZZ whom 7225 may concor-7e:

Be it known that I, WALTER R. BENJAMIN, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented a new and useful Air-Gun, of which the following is a specification.

This invention relates to a novel repeating air-gun, and is designed as an improvement of those forms of pneumatic guns disclosed in my former patent, No. 627,320, and in my concurrent application, Serial No. 29,674. In my patent aforesaid an air-pump in the form of an auxiliary attachment is provided, and in my concurrent application I have disclosed a reorganization of parts, by means of which the larger barrel is utilized as a pump-cylinder to improve the general appearance of the gun and to render it more durable. Neither of these guns, however, is ofthe repeating type, and the object of my present invention, therefore, is to produce an air-gun equipped with a magazine arranged to hold a large number of projectiles-as, for instance, shot-and with air compressing and controlling mechanism so organized and arranged that the gun may be repeatedly discharged without necessity for effecting the recompression of the air within the reservoir.

A further object of the invention is to mount the magazine shiftably upon a comparatively small projectile-barrel disposed parallel with the pump-barrel, so that thegeneral appearance of the gun will closely resemble those well-known types of repeating firearms which are equipped with a magazine-grip shiftably mounted upon a magazine-tube located under the gun-barrel, and to provide for the feeding of the shot from the magazine into the breech of the projectile-barrel one at a time by slight endwise movement of the magazine.

Another object of the invention is to provide an improved construction and arrangement of the valve for admitting air from the reservoir to the projectile-barrel behind the projectile and an improvedform of trigger for operating the valve in a'manner to permit the escape of'only a small, quantity or charge of air from the air-reservoir or the complete discharge of the air-reservoir, as desired.

Still further, but subordinate, objects of the invention will hereinafter more fully appearas the necessity for their accomplishment is developed in the succeeding description of the preferred form of my invention, illustrated in the accompanying drawings, and embraced within the scope of the appended claims.

In said drawings, Figure l is a side elevation of my repeating air-gun. Fig. 2 is a longitudinal sectional view thereof, on a somewhat-enlarged scale, with portions of the stock and barrel broken away and showing a shot or projectile located in the breech of the projectile-barrel and ready to be discharged. Fig. 3 is a sectionalelevation, on a still larger scale, illustrating the relation of the parts after the magazine has been shifted to feed another shot to the projectile-barrel after the discharge of the gun. Fig. 4 is a transverse sectional view on the line 4 4 of Fig. 2. Fig'. 5 is a transverse sectional View through the valved diaphragm ot` the pump-barrel, and Fig. 6 is a detail View illustrating a modified mounting of the trigger.

Like numerals of reference are employed to designate corresponding parts throughout the several views.

l indicates the pump-barrel of my gun, di- Y vided at a point intermediate of its ends bya valved diaphragm 2, defining a pump-cylinder 3 and an air-reservoir 4 at opposite sides thereof.'k The air-reservoir 4 is preferably er; tended by making' the stock 5 of the gun hollow, as shown, in order that sufficient compressed air may be stored to supply a number of charges for the projection of a number of projectiles without necessity for replenishing the reservoir after each shot is fired. Within the pu mp-cylinder defined by that portion of 'the pump-barrel in advance of the diaphragm 2 is mounted for reciprocation the piston or plunger 6 ofl but slightly less diameter than the interiorof the cylinder and provided upon its inner end with the usual cup-valve 7, designed to expand against the inner wall of the pump-cylinder for the purpose of making an air-tight connection therewith as the plunger is moved forward to :force air through the valved diaphragm.

The withdrawal of the plunger from the barrel is prevented by check mechanism of any suitable form, but preferably comprehending a stop-pin 8, passed transversely through the barrel and lying within an elongated slot 9 IOO , jectile.

in the plunger'. As ordinarily constructed the pistons or plungers of air-pumps are caused to rebound more or less after being forced to the inner limit of their movement by the air compressed between the inner end of the plunger and the valved diaphragm, whether the latter is located in the barrel of' the gun or in any other location.v This is particularly 0bjectionable in the class of devices with which my invention is concerned, because when the necessary amount of air has been compressed within the air-reservoirit is desirable that the plunger be obscured within the barrel as much as possible. I therefore prevent this rebound of the plunger by forming the barrel 1 just in advance of the diaphragm with a swell or offset 10, constituting a vent or by-pass. When the plunger has been forced inward until the cup-valve 7 is disposed opposite the vent 10, the compressed air in advance of the plunger will escape through the vent 10 around the valve '7 and may be discharged around the plunger instead of forcing the latter back in the manner noted.

The particular form of -the valved diaphragm 2 may be varied somewhat; but a simple and effective construction is shown in the drawings and is composed of a rubber gasket 12, fitted into the barrel 1 and having a metal lining 13, against one end of which is seated a valve 14, formed by the flexible rubber skirt of a plug 15 of less diameter than the opening through the diaphragm and secured therein by a transverse pin 1o', the flexibility of the skirt or valve 14 permitting the air to pass through the diaphragm in one direction. The dislocation of the diaphragm under the pressure of the air Within the reservoir 4 is prevented by a pin 17, passed transversely through the barrel 1, and between which and the diaphragm is interposed a metal washer 18, as shown.

y The construction thus far described relates wholly to the air compressing and storing mechanism which is essential to a pneumatic gun, and I' shall now proceed to describe the construction of those parts of the gun which provide for the storing of a number of projectiles and the successive feeding thereof to the projectile-barrel, and also the mechanism for controlling the escape of air from the reservoir to the projectile-barrel behind the pro- The projectile-barrel 19 is of much smaller diameter than the barrel 1 and is located parallel with the latter at its under side. At or adjacent to its rear end the barrel 19 is provided with a valve-nipple 20, projecting through the adjacent wall of the air-reservoir 4 and constituting a seat for the pu ppet-valve 21, having a stem 22 passed entirely through the barrel 19 and connected at a point therebelow with a spring 23, arranged to hold the valve 21 normally upon its seat. This valve when open permits the air from the reservoir 4c to enter the rear end of the projectile-barrel 19 and to effect the discharge of the projectile located therein.

Inasmuch, however,

as the valve-operating mechanism comprehending thetrigger and hammer is designed with special reference to an air-gun of the repeating type, I shall first describe the construction and arrangement of the magazine for supplying a number of projectiles in quick succession to the projectile-barrel. Adjacent to its rear end the projectile-barrel19 is provided with a breech-opening 24, normally closed by a breech-gate 25, preferably in the form of a substantially cylindrical sleeve partially encircling the barrel 19 and secured to the feed-tube 2G of the magazine 27, so that as the magazine is shifted in the manner t0 be described the breech-gate will uncover the breech-opening for the admission of a proy jectile from the magazine. It may be noted that the use of bushings is avoided by passing the stem 22 tranversely through the projectile-barrel, inasmuch as the latter affords a bearing for the stern at a point removed from the valve 21. In other Words, as the valve normally prevents the escape of air from the reservoir aud as the stem has a suitable bearing in the projectile-barrel it is obviousy unnecessary to provide a bushing around the stem.

The feed-tube is mounted in a plurality of heads, preferably three in number, (indicated by the numerals 28, 29, and 31),) slidably engaging the projectile-barrel 19 and encircled by the sleeve or cylinder constituting the outer wall of the magazine 27. This sleeve may be soldered or secured in any other usual manner to the several heads; but for convenience in construction and to enable the parts to be readily disorganized for purposes of repair the sleeve is preferably secured to the heads by screws, as shown in Fig. 1.

The feed-tube 26 is provided at its lower side with openings 31 and 32, designed to permit the projectiles passed into the front end of the feed-tube to drop into the magazine 27 and to readily pass from said magazine back into the feed-tube adjacent to the rear end of the latter when the gun is held in a substantially vertical position. At its rear end the feed-tube 26 is provided with an inclined Wall 33, opposite which the feed-tube is provided with a feed-cpening 34: of sufficient size to permit the passage of a single shot to the interior of the projectile-barrel when said feed-opening is moved to aposition directly opposite the breech-opening 211. Itis for the purpose of causing this apposition of the openings 24 and 34 that the magazine is shiftably mounted upon the projectile-barrel; but as it is essential that the magazine be shifted back to its original position after the delivery of a shot to the barrel I provide a retractingspring 35, preferably encircling the feed-tube and bearing at its opposite ends against the front end of the magazine, and a fixed bearing-sleeve 86, secured to the barrel 19, said sleeve also serving to guide the end of the feed-tube projecting beyond the head 28.

' The spring 35, as will be evident, tendscon- IOO IIO

them from being fed into the barrel.

stantly to hold the magazine in its rearward position, as shown in Fig. 2, with the breechgate 25 closing the breech-opening 24.

Ordinarily the feed-tube, as well as the magazine, is filled with projectiles, and it will appear, therefore, that some means must be provided for preventing more than a single shot from passing into the barrel 19 at one time. This may be accomplished by providing a cut-offin the form of a finger 37,designed to project transversely across the feed-tube for the purpose of holding in check all of the projectiles except that one which is resting upon the inclined end wall 33 when the feed and breech openings 24 and 34 are brought into apposition by the shifting of the magazine. This check or cut-off finger 37 preferably works through an opening in the side of the feed-tube and is mounted upon a springarm 38, secured at its front end within the magazine and having an angular rear eX- tremity 39, arranged to contact with a cam 40, secured to the projectile-barrel '19 in rear of the magazine, as shown in the first three figures of the drawings.

The relation of the spring-arm 38 to the cam 40 is such. that when the magazine is at one limit of its movement the cam 40 will hold the arm in position to cause the total retraction of the finger 37 from the feed-tube. In this position of the parts there is no necessity for checking the projectiles, as their entrance to the projectile-barrel is prevented by the breech-gate 25. As soon, however, as the gun has been iired and the magazine thrown forward it will be observed that the angular end 39 of the arm 38 will move out of engagement with the cam 40 and the finger 37 will be projected into the feed-tube to check the projectiles and prevent more than one kof As' the magazine is retracted, however, the end of the arm 38 will contact with the cam 40 and the finger 37 will be withdrawn to permit another projectile to drop upon the'inclined end wall 33, as shown in Fig. 2, in position to be fed into the barrel upon the next forward movement of the magazine. The shot or projectile fed into the projectile-barrel from the magazine will gravitate to the breech of said barrel, where it will be arrested by the stem 22 of the puppet-valvein position to be discharged by the air upon the opening of the valve.

It now remains to describe the valve-operating mechanism,which comprehends a novel arrangement of the trigger and hammer, designed, as heretofore stated, to open the valve for a brief interval sufficient to discharge a portion only of the air within the reservoir or to hold the valve open a sufcient length of time to permit the discharge ofthe entire quantity of stored air for shooting at an un-` usually long range. The special utility of the arrangement to be described will be better understood in view of the fact that itv is impossible to operate a valve by hand with that degree of quickness which is necessary in order to permit the escape of a single charge only of the compressed airthat is to say, if the trigger is connected directly to the valve it is impossible to manipulate the trigger for the purpose of opening the valve for thatbrief interval necessary to secure repeated discharges of air from the reservoir without necessity for replenishing the latter. I have therefore provided a spring-hammer 4l, disposed directlyiunder the lower end of the valve-stem 23 and havingits supportingspring bent around to form a trigger-guard 42 for the angular or bell-crank trigger 43. The trigger 43 is pivoted at 44 between a pair of parallel guard-plates 45, secured to the under side of the main barrel and receiving between them the rear end of the projectilebarrel, the upper portion of the trigger 43, and the trigger-spring 46, the latter being preferably formed by an extension of the triggerguard 42, secured to the under side of the main barrel by a screw 47, as shown.

Normally the spring-hammer 4l does not bear against the valve-stem with any pressure tending to open the valve; but it will be evident that the cooking of the hammer-'that is to say, its withdrawal from its normal position-will be resisted by the spring 42, and if after such withdrawal the hammer is suddenly released its spring will cause it to strike a sharp blow upon the lower end of the valve-stem, opening the valve sufficiently to permit the escape of a single charge of air. This opening of the valve. is instantaneous, because it is only the momentum of the hammer which opens the valveagainst the resistance of the spring 23, and such momentum is instantly overcome by the spring, which reseats the valve before more than a single charge of air can escape-from the reservoir.

IOI)

To effect this action of the hammer through the medium of the trigger,- the latter bears loosely at its forward end against thef ree end of the arm 48, pivoted upon the hammer 4l and supported at a point in rear of its pivot by a stud 49. The swinging of the trigger by the pressure of the forefinger` in the usual manner will thus cause the cooking or withdrawal of the spring-hammer until the dierential movement of the hammer and the trig- @er swinging as the do from different b .7 b t! polnts, causes the arm 48 to pass from under the front end of the trigger. The hammer'being thus released will fly back slightly past its normal position, and the valvewill be opened for a brief interval, as stated.` Immediately upon the release of the triggerit's spring will restore it to its normal position', and in doing so its forward end will raise-the arm 48 until the trigger has moved to a-position above it, at which time the arm will gravitate back to its supportedposition upon the stud 49 and the parts will be Vready for a repetition of the operation described. By this arrangement of the parts it will be noted that not only is a spring-hammer provided vfor the brief opening of the valve, but that said hammer is self-cooking andrequires only the manipulation ofthe trigger to eect the cockin g or retraction of the hammer and its subsequent release.

When it is desired to utilize the entire quantityof stored air for a single shot, the finger may be pressed against the under sidel of the hammer 41, which willthus constitute a trigger, and if this use of the entire quantity of air is desired continuously the spring-hammer may be removed and the trigger pivoted at its front` end, as indicated in Fig. 6, between a pair of pendent bearing-,ears 50, located in advance of the valve-stem and connected by a transverse stopt-bar 51, which limits the downward movement of the trigger and retains the latter normally in Contact with the lower end of the valve-stem, so that the latter may be operated directly from the trigger upon a slight elevation of the latter in an obvious manner. Y Briefly, the opera tion of the device is as follows: A plug 52, closing the front end of the feed-tube 26, is removed, and a large number of shot `are fed into the tube until the latter and the magazine are filled. The plug is then restored to place, and the plunger or pumppiston 6 is operated to store a quantity of compressed air within the reservoir 4E. The gun is nowr loaded by a slight forearm movement, which slides the magazine forward to open the breech-opening 24 and to simultaneously present the projectile at the rear end of the feedtube before the breech-opening. The movement necessary to accomplish this result projects the nger 37 into the feed-tube to constitute a cut-'off for all of the projectiles except one, which latter rests against the inclined end wall 33 and gravitates down the latter and into the breech of the projectile-tube when the muzzle of the gun is slightly elevated. Upon the release of the magazine the spring 35 will effect its retraction and simultaneously present the breech gate before the breech-opening and withdraw the cut-off or check-finger 37 from the feed-tube to permit another projectile to drop upon the inclined wall 33. The gun is now ready to be discharged, and this is effected, as already described, by swinging the trigger to cause the cooking and release of the hammer, which latter will fiy back and open the valve 2l to permit the discharge of the projectile by a singie charge of air from the reservoir. The magazine may now be manipulated to supply another projectile to the proj ectile-barrel, and the gun may thus be successively discharged a large number of times without necessity for reloading the magazine or for resorting to the air-pump for the purpose of replenishing the air-reservoir.

It is thought that from the foregoing the construction and operation ofy my invention will be clearly apparent; but while the present embodiment of said invention is thought at this time to be preferable` I desire to reserve to myself the right to effect such changes, modifications,and variations of the illustrated structure as may be suggested by experience and experiment, provided only that such variations are properly embraced within the scope of the protection prayed.

l. In an air-gun, the combination with a projectile barrel and an airreservoir, of a valve controlling the escape of air to the barrel, a spring-poised self-cooking hammer disposed to operate the valve, and a trigger for operating said hammer.

2. In an airgun, the combination with a projectile barrel and an air reservoir, of a valve controlling the escape of air to the barrel, a spring-poised self-cooking hammer disposed tooperate the valve, and a trigger operatively connected to the hammer to move it to its raised or cocked position, said trigger being arranged to release the hammer at one limit of its movement and thereby permit the hammer to spring back beyond its normal position and deliver a sharp blow to the valve.

3. In an air-gun, the combination with a projectile-barrel and an air-reservoir, of a valve controlling the escape of air to the barrel, a spring-hammer disposed to open the valve, a trigger for operating the hammer, and means for effecting an operative connection between the trigger and hammer during the movement of the trigger in one direction, and not otherwise.

4t. In an air-gun, the combination with a projectile-barrel, an air-reservoir, and a controlling-valve, of a spring-urged hammer for operating the valve, a trigger for operating the hammer, and a movable member carried by one of said elements to eect an operative connection between the trigger and hammer when the trigger is moved in one direction, and to permit the return of the trigger to its normal position independently of the hammer. t

45. In an air-gun, the combination with a projectile-barrel, an air-reservoir and a controlling-valve having an extended stem, of a spring-hammer disposed to strike a sharp blow upon the stem to open the valve, a pivotedtrigger, a pivoted arm mountedon the hammer in the path ot' the trigger, and means for supporting the pivoted arm in its proper position to` effect an operative connection between the trigger and hammer when the former is moved in .one direction.

t. In an aingun, the combination with a projectile-barrel, an air-reservoir and means for controlling the escape of `air `to the projectile-barrel, of a shiftable magazine for the reception of a number of projectiles, and means operated by the shifting-of the magazine for transferring the projectiles to the projectile-barrel- 7. In an air-gun, the combination with a ICO projectile-barrel, an air-reservoir, and means tor controlling the escape of air to the projectile-barrel, of a magazine shiftably mounted upon the projectile-barrel and arranged to projectile-barrel provided With a breech-open-l ing, an air-reservoir, and means for controlling the escape of air to the barrel, of a shiftable magazine for the reception of a number of projectiles and provided with a feed-opening arranged lo be brought into coincidence with the breech-opening of the projectile-barrel by the shifting of the magazine, and means for preventing the escape of more than a single projectile from the magazine to the proj ectile-barrel when the feed and breech openings are brought into coincidence through the movement of the magazine.

9. In an air-gun, the combination with a projectile-barrel provided with a breech-opening, yan air-reservoir and means for controlling the escape of air to the projectile-barrel, of a shiftable magazine for the reception of a number of projectiles and provided with a feed-opening normally disposed out of coincidence with the breech-opening of the projectile-barrel, a breech-gate movable with the magazine and normally closing the breechopening, and means for preventing the escape of more than a single projectile from the magazine When the feed and breech openings are brought into coincidence by the movement of the magazine. l

10. In an air-gun, the combination with a projectile-barrel, an air-reservoir and means for controlling the escape of air to the pro- ,je'ctile-barrel, of a shiftable magazine for the reception of a number of projectiles andar- -ranged to supply said projectiles, one at a time, to the projectile -floarrel through the movement of the magazine in one direction, and means for automatically returning the magazine to its normal position.

1l. In an air-gun, the combination with a projectile-barrel, an air-reservoir and means for controlling the escape of air to the pro-I 4jectile-barrel,of a shif table magazine designedl for the reception of a number of projectiles and arranged to feed said projectiles, one at a time, to the projectile-barrel through the movement of the magazine, and means for feeding the projectiles one at a time, to a position for delivery to the projectile-barrel upon the next movement of the magazinel 12. In an air-gun, the combination with a projectile-barrel provided With a breech-openling, an air-reservoir and means for controliling the escape of air to the projectile-barrel, Iof a shiftable magazine provided with a feedopening arranged to be brought into coincidence With the breech-opening through the movementof the magazine, and an au'tomatic cut-off device arranged to permit a single projectile to drop to a position opposite the feedopeningwhen the magazine ls'retracted.`

'13. Infan air-gun, the combination with a projectile-barrel pro vided with a breech-opening,anair-reservoir, and means for controlling the escape of air tothe projectile-barrel,

Y of a shiftabl'e magazineprovided with afeedopening designed to bebrought into coincidence with the breech-opening through the movement ofthe magazine, a cut-off arranged,

to prevent the passage of more than' a single projectile to the projectile-barrel,and means for automatically operar-'ing the cut off through the movement of the magazine.

14. In an air-gun, the combination with va proj ectile-barrel provided with abreech-opening, an air-reservoir, and means for control- -ling the escape of air to the projectile-barrel,

of a shiftable magazine provided with a feedopening arranged to be brought into coincidence with the breech-opening by the movement of the magazine in one direction, a cutoff disposed to prevent the escape of more than a single projectile to the projectile-barrel, means for automatically moving the cuto to its operative position when the magazine is moved to supply a projectile to the projectile-barrel, and means for moving the cut-od to its inoperative positionwhenthe magazine is retracted, the last-named movement of the cut-off serving to permit another projectile to be presented imposition fordelivery to the projectile-barre .j

l5. In an air-gun, the combination with a proj ectile-barrel provided with a breech-opening, anair-reservoir and means for controlling the escape of air to the barrel, of a shiftable magazine provided With a feed-opening designed to be broughtinto coincidence with the breech-opening through the movement of the magazine, a spring-arm provided with a` check-finger constituting a cut-off to prevent morethan a single projectile from escaping to the projectile-barrel, an arm extending from said spring, means for retracting the magazine, and a cam arranged in the path of said arm to effect the retraction of the nger When the vmagazine reaches the limit of its retractile movement. o

16. In an air-gun, the combination with a projectile-barrel, an air-reservoir and means for controllingthe escape of air to the barrel, of a magazine comprising an apertured feedtube, an outer casing defining an enlarged receptacle for the'projectiles, and means for feeding the projectiles one at a'time from the feed-tube to the projectile-barrel.

17. In an air-gun, the combination With 'a projectile-barrel, an air-reservoir and means for controlling the escape of air to the barrel, of a magazine for the reception of a number of projectiles, said magazine comprising a feed-tube having openings permitting the escape of projectiles from the feed-tube to the IIO magazine proper and from the latter back to the feed-tube, said proj ectile-barrel and feedtube being provided with openings designed to be brought into coincidence, and a cut-o device extended into the feed-tube to prevent the escape of more than a single projectile from the feed-tube to the projectile-barrel.

18. In an air-gun, the combination with a proj ectile-barrel provided with a breech-opening, an air-reservoir and means for controlling the escape of air to the projectile-barrel, of a magazine shiftably mounted upon the proj ectile-barrel and comprising an outer casing and a feed-tube, said feed-tube being provided with a feed-opening and with other openings for establishing communication with the feed-tube and the magazine proper, a magazine-retracting spring bearing against one end of the magazine to urge the latter in one direction, and cut-off mechanism automatically operated by the movement of the magazine to eiect the feed of the projectiles one at a time, from the feed-tube to the projectile-barrel.

19. In au air-gun, the combination with a proj ectile-barrel provided with a breech-opening, an air-reservoir, and means for controlling the escape of air to the barrel, of a magazine provided with an inclined end Wall and with a feed-opening located at the end ot' said wall, means for bringing the feed-opening ot' the magazine into coincidence with the breechopening of the projectile-barrel, and means for preventing more than a single projectile from escaping to said barrel.

20. In an air-gun, the combination with a projectile-barrel provided with a breech-opening, an air-reservoir, and means for controlling the escape of air to the barrel, of a magazine provided with an inclined end -Wall and with a feed-opening disposed opposite said inclined Wall, and an automatically-operated cut-oft device arranged to prevent more than a single projectile from escaping to the projectile-tube and to subsequently permit another projectile to drop upon the inclined wall of the magazine.

21. In an air-gun, the combination with the pump-barrel, of a valved diaphragm defining at opposite sides thereof a pump-cylinder and an air-reservoir, a plunger Within the pumpcylinder, a valve located at one end of the plunger, and a by-pass formed in the wall of the pump-cylinder to relieve the compression in advance of the plunger.

22. In an air-gun, the combination with the pump-barrel, a projectile-barrel, and means for controlling the escape of air to the projectile-barrel, of a valved diaphragm in the pump-barrel, a plunger in the outer end of the said barrel, a cup-valve upon one end of the plunger, and a swell located in the wall of the pump-barrel adjacent to the diaphragm and constituting a by-pass for relieving the compression in advance of the plunger.

23. In an air-gun, the combination with a pump-barrel, of a valved diaphragm constituting a division between the pump-cylinder and the reservoir formed by the opposite end portions of the pump-barrel, a slotted plunger within the pump-cylinder, a transverselydisposed stop-pin engaging the slot in the plunger, a projectile-barrel, and means for controlling the escape of air from the reservoir to the projectile-barrel.

24. In a device of the character described, the combination with the pump-barrel, of a valved diaphragm comprising a lined gasket fitted into the barrel, and a valve comprising a plug secured within the opening of the diaphragm and having a flexible skirt seated against one end 4oiE the lining.

In testimony that I claim the foregoing as my own I have hereto affixed my signaturein the presence of two Witnesses.

WALTER R. BENJAMIN.`

Witnesses:

. W. WOLTERING,

JNO. F. JUDD.

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