US2361126A - Dispenser - Google Patents

Description

Oct. 24, 1944. v. G. KLEIN 2,361,126

DISPENSER Filed Sept. 20, 1943 2 Sheets-Sheet 1 0f.24, 1944. V G KLEM 2,361,126

DISPENSER Filed Sept. 20, 1945 2 SheetseSheet 2 N. Q Ll.

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E .s 0.; 9 Q LT V Patented Oct. 24, 1944 DISPENSER Vctor G. Klein, St. ILouis, Mo., as'signor to Lincoln Engineering Company, St. Louis, Mo., a

corporation of Missouri v Application September 210, 1943, Serial N o. 503,060

8 Claims.

This invention relates to dispensers and with regard to certain more specic features to handoperated dispensers for lubricants, caulking materials and the like.

The invention constitutes a special form of the invention disclosed in a co-pending United States patent application of myself, Lutwin C. Rotter and Rudy F. Schneller, Serial No.,503,058, filed September 2'0, 1943, for pumps.

Among the several objects of the invention may be noted the provision of .a follower type of dispenser, such as described in said patent application, wherein a latch for a follower catch is very simple, strong and fool-proof and which is easy to install in the gun; the provision of such a latch which is made of parts large enough that their reliability can be assured without great assembly expense during manufacture; the provision of a device of the class described in one form of which latch release is effected from the same operating handle and by the same manual operating stroke that operates said operating handle; the provision of a device of the class described in which the follower may, in addition to automatic bias, be biased manually to enhance priming and eliminate air pockets. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structures hereinafter described, and the scope of the application of Which will bey indicated in the following claims.

In the accompanying drawings, in which are illustrated several of various possible embodiments of the invention,

Fig. 1 is a longitudinal section showing a preferred form of the invention shown in latched position;

Fig. 2 is a view similar to Fig. 1 showing unlatched positions of parts;

Fig. 3 is a cross section taken on line 3-3 of Fig. 1;

Fig. 4 is la cross section taken on line 44 of Fig. 2;

Fig. 5 is a longitudinal section of an alternative embodiment of the invention showing a latch in released position;

Fig. 6` is a fragmentary view similar to Fig. 5 f

and showing a latching position; and,

Figs. 7 and 8 are cross sections taken on lines 1-1 and 8--8 respectively of Fig. 6.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

So far as applicable, reference characters will be used herein corresponding to those used in said patent application where the parts correspond.

Referring now more particularly to Figs.'1-4, there is shown at numeral I a cylindric container having a head 3 which carries the cylinder 'l of a pump mechanism. At 9 is shown the outlet check valve of the pump cylinder l, and at II a coupling member which is one of the usual type used for the purpose. It is to be understood that the head 3 is removable `for the purpose of refilling the container when desired.

At the other end of the container I is an enclosing cap 2. Within the container is a coaxial reciprocating stem I5 which passes out through the cap 2, at which point it is provided with a handle 4. Forwardly in the stem I5 carries a plunger I3 which cooperates with the cylinder 1, and upon retraction effects in-drawing of material from the container I into the cylinder l. When pushed, expulsion occurs through the check valve 9. The plunger I3 is held to stem I5 by means of a pin I9 which eX- tends sidewise as shown.

Within the container I is a follower piston 23 carried on a catch-holding cylinder 55. To the rear end of the cylinder is threaded a catch member 54 which has a conical cam 5l behind which is a groove 59. The part 54 is hollow and carries a packing 56 for engaging the reciprocating stem I5. This packing is backed by a washer 58. The interior of the tube 55 is arranged with a wall 6D in which are slots 62 for accommodating the pin I9 in one angular position of the latter. Thus the pin may be passed through said bottom 60 to a position adjacent the washer 58 and then turned and so may, when desired, be used as a manual pusher for advancing the follower 23 toward the left. Such manual advance issometimes desired, as when the pump I loses .its prime due to air binding caused by air in the lubricant. The pin I9 is also used to draw back the follower for purposes to be described. This is done either by pin I9 engaging Wall 60, or the washer 58, as desired.

The right-hand end of the cylinder 54 is formed as a neck 64 which slides on the stem I5 and may also be introduced into a hollow bushing 66. This bushing slides in a neck 68 of the cap 2 and is engageable by a shoulder 69 on the handle 4 when the latter is pushed in.

Within the cap 2 is a circular plate Ill to which is fastened, by welding or the like, a hollow cone l2. Passing loosely through an opening 'I4 in the plate 'IIJ is the head I6 of a rivet 78 which is fastened on the inside of the cap 2. The plate l0 has a large central opening 8D for free passage of the neck 64 in any position of the plate.

Also, in the plate 10, opposite to the hole 14, is a third hole 82 which loosely engages a rivet 84, the latter being also rigidly held on the inside of the cap 2.

From the above it will be seen that the assembly of the plate 10 and cone 12 may loosely rock on the head 16 as a substantial center. However, in view of the guide rivet 84 in hole 82 this assembly may not rotate around the axis of the stem I5.

The small end of the cone 12 is provided with an inwardly turned lip`86 which, when the cone 12 is angled as shown in Fig. 1, catches in the groove 59 behind the cam 51, provided the follower is drawn back. The assembly of plate 19 and cone 12 is normally pushed to the angled position shown in Fig. 1 by a spring 25 which is compressed under the follower 23. In other words, the spring places what will be called the latch assembly'19, 12 into the angled latch positions shown in Fig. 1.

, The purpose of the sliding bushing 66 is to contact the plate 10 and straighten it up from the angled position shown in Fig. 1 to the substantially coaxial position shown in Fig. 2. This is done by pushing in-the handle 4 which causes the shoulder 69 to contact said sleeve 86 and push it against the plate 10. Thereupon, the assembly 18, "I2 straightens up as shown in Fig. 2 to release the catch parts 51, 58 and associated follower 2-9. The spring 25 thereafter biases the follower 23 against the material in the container I.

Thus, assuming the dispenser to have been just lled and reassembled, as indicated in Fig. 1, the operator simply pumps on the handle 4 thereby reciprocating the stem I5. On the first stroke the shoulder 69 contacts the sleeve 66 which pushes said sleeve in to straighten up the latch assembly 18, 12. Once this assembly straightens up, the follower is released for bias toward the left. Then, upon subsequent pumping action and emptying of the container I, the follower under bias of spring 25 aids in priming the pump. While upon any stroke subsequent to the first one, the latch may again be operated, it is ordinarily unimportant, for by then the catch parts in association with the follower 23 have generally moved to the left and are latch-free.

In order to rell the container I when it is empty it is necessary only to unscrew the head 3 and to retract the stem I5. Upon retraction of the stern I the pin I9 draws back the follower 23, either by contacting the wall 80 or contacting the washer 58 after passing through the openings 62. When the handle II is drawn back, the sleeve 86 is released so that under bias of the spring 25 the latch assembly 10, 12 is angled.

Hence, when the cam 51 strikes the turned-in shoulder 86 the latter rides up the cam and snaps into position in the groove 58. Thereafter the gun may be easily filled and reclosed. All that is 'then required to start the pumping action and follower release is simply to pump. The first stroke at least results in the shoulder 59 pushing in the sleeve 66 and causing the latch assembly 10, 12 to move from the Fig. 1 position to the Fig. 2 position wherein release of the follower is accomplished. Thereafter the follower is generally free to proceed automatically by pressure from spring 25 but, if not, a subsequent stroke will, or can be made to, release it.

If, after release has occurred, it is desired to provide the manual push on the follower abovementioned, the pin I9 may be retracted through the openings 82 and turned, whereupon it mayv be pushed against the wall 60 for follower pushing purposes from the handle 4.

In Figs. 5-8 is shown another form of the invention in which like numerals designate like parts. In this case the stem I5 is reduced in diameter as shown at 33, leaving a shoulder 21. The handle 93 at the end of the reduced stem serves pumping purposes.

Sliding on the reduced portion 33 of the stem I5 is a bushing 81 carrying a second handle 89. The fingers of the handle which grips 93 may cooperate with 89. The bushing 81 carries a conical cup 19 which has a cylindric part 8! provided with bayonet Slots 83.

The cap 6I used on the right-hand end of the container I is in this case provided with arcuate openings 63 between which are bridge portions 65- The Openings 63 accommodate the parts of the cup 19 which are between its bayonet slots 83 and the parts of the bridge portions 65 may enter said slots 83.

Inside the cap 6| is attached an anchor rivet I having a head |02 passing through an open-A ing |86 in plate |04. Plate |94 rocks on rivet |68. The plate has affixed thereto a hollow cone |89 provided at its small end with an in-turned lip IIIl. This, lip Ii is engageable with a camming cone ||2 of cylinder ||`4 which is attached to the follower piston 23.

If the follower be manually drawn back, the cam I|2 cams up the angled turned-in edge IID whereupon the latter drops onto the cylinder IUI. At this time the latch forming members |634, |88 are biased by the spring 25 to their angular position shown in Figf. It is assumed that at this time the control member 93 is released and drawn back as shown in Fig. 6. This allows the shoulder 21 to slide out besides allowing latch assembly |84, |08 to tilt. It is under these conditions that the coupling 28 between I3 and I5 may contact follower nose 22 of piston 23 for pull-back purposes.

In order to straighten up the latching assembly 184, |88 and release the follower, it is only necessary to push the bayonet slots 83 over the bridge parts 65, thereby entering the remainder of the parts between the bayonet slots through the opening 83 and into engagements with the plate |84. The result of straightening up the assembly |84, |88 is shown in Fig. 5. The plate may be held in this position by rotating these cups 19 so that the bayonet catch becomes' effective. Thereafter, under bias of spring 25, the follower may advance against the material in the container I.

A return spring 9| is provided to react be' tween the bushing 81 (when fixed) and the control member 93 so that reciprocation of the stemA I5 may be managed simply by alternately pushing and releasing the member 58. The spring 9| provides the power for the suction stroke of the plunger I3 when the bushing is held stationary under locked conditions between 'the cup 19 and the cap 6I. The bushing 81 also forms a return stop for the stem I5 -by reason of. engagement with the bushing 81 and the shoulder 21, as indicated in Fig. 5.

The releasing action on the latch |84, |88, which holds the catch on the follower 23, is eifected by a separate hand motion on the handle 89.

In View of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description shall b e in-` terpreted as illustrative and not in a limiting sense.

I claim:

1. In a dispenser a container, an enclosing cap on the container, a reciprocating stem passing through the container and out of the cap, a follower movable in the container and positioned around the stem, a catch on the follower, a rocking latch within the cap, a compression spring biasing between the follower and said latch adapted normally to rock the latch to a position in which it will automatically latch the follower when said follower is drawn back to the latch, and means slidable on the stem and through said cap and operable from the exterior to one position in engagement with the latch to straighten it against said bias to release said catch.

2. In a dispenser a container, an enclosing cap on the container, a reciprocating stem passing through the container and out of the cap, a follower movable in the container and positioned around the stem, a catch on the follower, a rocking latch within the cap, a compression spring biasing between the follower and said latch adapted normally to rock the latch to a position in which it will automatically latch the follower when said follower is drawn back to the latch, and means slidable on the stern and through said cap and operable from the exterior to one position in engagement with the latch to straighten it against said bias to release said catch, said slidable means being operative by means on the stem upon reciprocation of the stem.

3. In a dispenser a container, an enclosing cap on the container, a reciprocating stem passing through the container and out of the cap, a follower movable in the container and positioned around the stem, a catch on the follower, a rocking latch withinlthe cap, a compression spring biasing between the follower and said latch adapted normally to rock the latch to a position in which it will automatically lock the latch when said follower is drawn back to the latch, and means slidable on the stem attaching to said cap and operable from the exterior to one position in engagement with the latch to straighten it against bias to release said catch, said last-named means Vcomprising a sleeve, and a handle on said stern engageable with said sleeve upon reciprocation of the stem to effect said latch-releasing action.

4. In a dispenser a container, an enclosing cap on the container, a reciprocating stern passing through the container and out of the cap, a follower movable in the container and positioned around the stem, a catch on the follower, a rocking latch within the cap, compression spring means biased between the follower and said latch adapted normally to rock the latch to a position in which it will automatically hold the catch when said follower is drawn back to the latch, control means slidable on the stem attaching to said cap and operable froi'nthe exterior to one position in engagement with the latch to straighten it against the bias to release said catch, said last-named means comprising means insertable through openings in said cap and engageable with the latch to move the latter against its bias to a release position in respect to said catch, a handle on said control means, and a quick-detachable connection between said control means and the cap, said quick-detachable connection comprising a bayonet means cooperating with said openings in the cap.

5. In a dispenser a container, a follower movable in the container, a catch also movable in the container and attached to the follower, a latch cooperable with said catch, a pivotal support for said latch, a compression spring biased between the follower and said latch whereby the latter is normally angled by the spring into a latching position with respect to said catch, and control means movable into position engaging said latch to move the latch into catch releasing position.

6. In a dispenser a cylindric container, a cap thereon, a follower piston movable in the container, a reciprocating stem passing through the follower piston and cap, a catch movable with the follower, a circular latch cooperable with said catch and surrounding the stem, a pivotal support on the cap for said latch and located on one side of the stem, a compression spring biased between the follower and said latch whereby the latter is normally forced by the spring into a latchingposition with respect to said catch, said position being non-coaxial with respect to the stem, and coaxial control means on the stem movable into position engaging said latch to move the latch into a coaxial catch releasing position.

'7. In a dispenser a container, a cap thereon, a follower in the container, a catch attached to the follower, a latch pivoted entirely within the container and cap so that in one position it releases the catch and in another engages the same, a compression spring reacting between the follower and said latch to normally springingly bias the latter to latch engaging position, and means operable from the outside of the container and passing through said cap and engageable with said inside latch to overcome said bias and force said latch in its disengaging position.

8. In a dispenser a container, a follower in the container, a catch attached to the follower,

a latch pivoted so that in one position it releases the catch and in another is engageable with the same, a compression spring reacting between the follower and said latch normally springingly to bias the later to latch engaging position, means operable from the outside of the container engageable with said latch to overcome said bias and'force said latch in its disengaging position, reciprocating means passing through said follower and container and outwardly from the latter, and means on said reciprocating member for forcing said latch to disenga'ging position upon insertion movement of the reciprocating member, and means cooperating between the reciprocating member and follower for drawing back the latter upon retractve movement of the reciprocating member, whereby retraction of the follower automatically releases the latch to engaging position and insertion of the reciprocating member automatically releases the follower for movement.

VICTOR G. KLEIN.

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