US1468254A

US1468254A - Can-filling machine

Info

Publication number: US1468254A
Application number: US558868A
Authority: US
Inventors: Charles H Ayars
Original assignee: AYARS MACHINE CO
Current assignee: AYARS MACHINE CO
Priority date: 1922-05-06
Filing date: 1922-05-06
Publication date: 1923-09-18
Anticipated expiration: 1940-09-18

Description

Sept. 18, 1923.

1,468,254 c. H. AYARS CAN FILLING MACHINE Filed May 6, 1922 4 Sheets-Sheet 1 A? 1 I i? \l l in? z: 9 f F 682i l I I z i l 6 J a i ii i i CVH. AYARS CAN FILLING MACHINE Sept. 18,1923. I 1,468,254

Filed May 6. 1922 4 sheefs sheet 2 Sept. 18, 1923.

c. H. AYARS CAN FILLING MACHINE Filed May 6. 1922 4 Sheets-Sheet 5 Sept. 18 1923.

0. H. AYARS CAN FILLING MACHINE Filed May 6, 1922 4 Sheets-Sheet 4 CHARLES H. AYABS, OF SAL, JERSEY, ASSIGNOR TO AYARS MACHINE COH- PANY, F SALEM, NEW JERSEY.

CAN-FILIJBIG MACHINE.

Application filed may 6, 1922. Serial No. 558,868.

To all whom it may concern:

Be it known that 1, CHARLES H. AYARS,

a citizen of the United States, residing at- Salem, in the county of Salem and State of New Jersey, have invented certain new and useful Improvements in Can-Filling Machines, of which the following is a specification.

In Letters Patent of the United States No. 1,073,067 granted me September 9, 1913, I have shown and described a can filling machine especially adapted for filling cans with liquid or semi-liquid materials in which there is a series of two chambered measuring shells, the chambers opening into each other at the lower end; plungers adapted to reciprocate in each chamber; cam-tracks by which the plungers are reciprocated, and non-automatic means for displacing a selected section of one cam-track so that, if the shaft which operates the rotating elements of the machine be revolved when there are no cams upon the can seats, the rollers which engage with the cam-track will follow a by-pass and leave one plun er in a position which closes the outlet of t e measuring shells so that the material will not be discharged when no can is in position to receive it, but is forced back into the tank.

Automatic mechanism, for replacing the movable sgction of the cam-track, actuated by pressure exerted through the cams has been in use for some years. Such mechanism is defective because the movable section of the cam-track is yieldingly held in alignment with the stationary section and when the positively driven roller engages with the movable section it exerts a force tending to swing said section out of alignment with the stationary section and toward its nonengaging position. Thisforce is transmitted to the positively held can and is often sufficient to dent or mar the can.

The object of this invention is to provide automatic means for locking the track sections in alignment while the plunger operating roller is pasing over the movable section and automatic means for releasing the movable section from the domination of the lock while the roller is passing over the stationary section thereby preventing track displacement and providing against in'ury to cans by re-action of the force exerte by the roller.

In the drawings Figure 1 is a front elevation partly in Referring to the drawings, represents part of the frame of the machine, 11 the tank from which the material to be canned is fed to. the measuring shells, 12 a measuring shell consisting of two chambers, 13 and 14, communicating with each other through a port 15, the chamber 14 having a discharge nozzle 16 through which the material goes to the cans, 17 a. plunger mounted to reciprocate in chamber 13 and 18 a plunger mounted to reciprocate in chamber 14. The plunger 17 is carried by a rod 19 connected to a bracket 20 carried by a vertical rod 21 to which is secured a bracket 22 carrying a roller 23 adapted to travel on a cam track 24 and cause the plunger to reciprocate in its chamber. The plunger 18 is carried by a rod 25 connected to a bracket 26 carried by a rod 27 to which is secured a bracket 28 carrying a roller 29 adapted to travel on a cam track'30 and cause the plunger to reciprocate in its chamber Cam track 30 is made in two

sections

30 and 30, the latter being mounted that it may be swung in or out of alignment with the stationary section 30. The movable section is carried by a depending arm supported by a lug 36 pivotally connected with a lug 37 fixed to the frame. A sprin 38,

having one end attached to an arm 39 xed to the frame and the other end attached to a lug 40 on the depending arm 35, serves to hold the movable section of the cam track out of alignment With the stationary section as shown in Figures 1, 2 and 3. The lower end of the depending arm carries abolt 41 taking through a link 42 which is pivotally attached at 43 to a lever arm 44 pivotally mounted at 45 on a bracket 46 extendin from the frame. This leverarm is norma 1y held, by spring 38, in position to engage the cans as they reach their filling position as shown in Figure 2. I ressure of the can, as it is further rotated will force the lever arm, and consequently l nk 42 and arm 35, outwardly thereby forclng the movable section 30 of the cam track into alignment with thestationary section 30. The roller 29 will then ride upon the track and plunger 18 will reciprocate in chamber 14. If there be no can in position to I engage the lever arm 44 it will retain its position; the movable section of the cam track will be held out of alignment wlth the stationary section; the roller29 Wlll pass under the stationary section, and plunger 18 will be left at its low position closing the discharge outlet of the measuring cells. When the positively driven roller engages with the movable section of the track it exerts a force tending to swing said section out of alignment with the stationary section and toward its non-engaging position. This force is transmitted through depending arm 35 and link 42 to the positively held can and is often sufficient to dent or mar the cans. To guard against such displacement of the movable section of the cam track and against such injury to the cans I provide the mechanism hereinafter described. The movable section is rovided with a lug 47 adapted to engage with the outer side of the stationary section as the two are brought into alignment. A lever 48 preferably of the bell crank type has, at one end, a beveled face 49 of the latch type which extends into the path of travel of lug 47 and is spr ng held in a position adjacent to the outer side of the stationary section of the track so that as lug 47 approaches the stationary sectlon it will depress the latch face, and as lug 47 contacts with the stationary section the latch will spring up and lock the lug and through it the movable section of track in allgned position.

The bell crank lever, as shown in Figures 5 and 6, is fulcrumed at 50 on a bracket 51 supported by the frame and the short end of the lever is pivoted at 52 to an upwardly extending link, 53, which at its upper end is pivotally connected by a bolt 54 with one end of an arm 55. This arm is carried by a sleeve 56 which is pivotally mounted on a bolt 57 carried by a bracket 58 secured to the frame. A shoe, or finger 59, also carried by sleeve 56, extends over the stationary section of the cam track and inclines downwardly into the path of travel of the roller 29. An arm 60 extending from bracket 51 is connected by a spring 61 with one end of the pivot bolt 54.

As a roller passes fromthe movable to the stationary section of the cam track the parts will be in the position shown in full lines in Figure 5 with the-latch face in engagement and holding the section in alignment. As the roller continues in its path of travel it engages with and lifts the shoe 59 thereby, through sleeve 56, lifting the outer end of the arm 55 which lifts link 53 and the short arm of the bell-crank lever, against the tension of spring 61, thereby withdrawmg the latch from its locking position and positionin the parts as shown by dotted lines 1n igure 5. When the roller passes from under the sleeve 59 the tension of spring 61 restores the bell crank lever to its normal position with the latch in position for agaln engaging with lug 47 as the movable sectlon is swung into alignment.

While I have described my invention as taking a particular form, it will be understood that the various parts of my inventlon may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairl come within the scope of the append claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a can filling machine, a cam track having a stationary and a movable section normally held out of alignment with the stationary section; a lever arm adapted to be engaged by a can as it reaches its filling position; connections between the lever arm and the movable section of the cam track whereby movement of the can swings the movable section into alignment with the stationary section and a yieldingly mounted latch adapted to engage with the movable section when it reaches its aligned position and hold it in alignment.

2. In a can filling machine, a cam track having a stationary and a movable section normally held out of alignment with the stationary section; a lever arm adapted to be engaged by a can as it reaches its filling position; connections between the lever arm and'the movable section of the cam track whereby movement of the can swings the movable section into alignment with the stationary section; automatic means for locking the sections in alignment, and automatic means for releasing the lock.

3. In a can filling machine, a cam track having a stationary section and a movable section normally held out of alignment with' the stationary section; means for automatically swinging the movable section into alignment with the stationary section; a roller adapted to travel on the track; a spring pressed latch adapted to engage with the movable section as it reaches its position of alignmentand lock it in alignment, and

means actuated by the roller for releasin the lock.

4. In a can filling machine, a cam track having a stationary section and a movable section normally held out of alignment with the stationary section; means for automatically swinging the movable section into alignment with the stationary section; a roller adapted to travel on the track; a spring pressed latch adapted to lock the movable section in alignment; a p-ivotally mounted shoe extending into the path of the roller and connections between the shoe and the latch whereby as the shoe is lifted by the roller the latch is disengaged.

5, In a can filling machine, a cam track having a stationary section and a movable section normally held out of alignment with the stationary section; means for automatically swin 'ng the movable section into alignment wit the stationary section; a roller adapted to travel on the track; a lever carrying at one end a latch part adapted to lock the movable section in alignment; an arm pivotally mounted on a fixed art of the frame; a link pivotally connecting the lever and the arm; a spring normally holding the lever in its locking position, and a shoe adapted to lift the arm and to be lifted by the roller thereby disengaging the look.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES H. AYARS.