US2587826A

US2587826A - Operating means for the plunger of cushion filling machines

Info

Publication number: US2587826A
Application number: US10484A
Authority: US
Inventors: Ferrier Herman; Norman J Nish
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-02-24
Filing date: 1948-02-24
Publication date: 1952-03-04
Anticipated expiration: 1969-03-04

Description

March 4, 1952 H. FERRIER ETAL OPERATING MEANS FOR THE PLUNGER OF CUSHION FILLING MACHINES 2 SHEETS-SHEET 1 Filed Feb. 24, 19.48

March 4, 1952 Filed Feb. 24, 1948 H. FERRIER ETAL OPERATING MEANS FOR THE PLUNGER OF CUSHION FILLING MACHINES 2 SHEETS--SHEET 2 A TTU/QNEY Patented Mar. 4, 1952 OPERATING MEANS FOR THE PLUNGER QE CUSHION FILLING MACHINES Herman Ferrier, Oakland, and Norman J. Nish, Alameda, Calif..; said Nish assignor to said Ferrier Application February 24, 1948,v Serial No. 10,484

'6 Claims. 1

This invention relates to improvements in operating means for cushion filling machines, and provides a machine with a new type of plunger feed and release, by means of which the plunger can be moved to any desired degree with each operation and is therefore not limited to a specific movement as when a rack is used, this invention incorporating a gripping device which will grip the pusher rod at any point through engagement and friction, and the pusher rod holder operates in the same Way, whereby it is possible to operate the plunger with full or partial strokes with equal efiiciency.

The objects and advantages of the invention are as follows:

First, to provide a machine as outlined with asimple in construction and operation and with a minimum of parts.

In describing the invention reference will be had to the accompanying drawings, in which:

Fig. 1 is a top plan view of a cushion filling machine with my improvements applied thereto.

Fig. 2 is a side elevation of Fig. 1 partly shown in section.

Fig. 3 is an enlarged section through the pusher head taken on a line 33 of Fig. 1.

Fig. 4 is a section taken on line 4-4 of Fig. 1 showing the self-adjusting holddown.

Fig. 5 is an enlarged top plan view of the pusher operating mechanism.

Fig. 6 is a side elevation of Fig. 5 partly shown in section.

The invention is applied to a cushion filling machine having a filler holder having side walls l0 and a bottom consisting of two sections l I and I2 which overlap, and a pair of cover members 13 and M which similarly overlap, the overlapping portions being free for adjustment of the width of the filler holder, the cover members being hinged to the sides as indicated at I5. The bottom members I l and I2 are slidable on the adjustlng bracket 16 and are adjusted conventionally by means of a right-and-left hand screw I! manually operably by a crank l8, the width-oi 2, the holder being adjusted to just snugly receive a cushion cover over the end IS.

The bracket [6 is supported on a head 20 which is provided with a suitable support such as legs 2|, and 22. A foot treadle 23 is pivoted at one end to one of the rear legs "as indicated at 24 and has a treadle pad 25 at the other end.

The holddown for the covers consists of a bar which terminates at one end in a threaded portion 26 and at the other end in a handle 21 with the intervening portion 28 being slightly declined toward the handle portion, and the'threaded portion passes through a hole in the bracket 29 with a nut on each side, as indicated at 30 and 3| providing for initial adjustment. These nuts are drawn up quite tight so that they will retain their relative positions when the crank is turned from the outward freeing position to the clamping position, and in turning to the clamping position the threaded portion screws down through the nuts, thus drawing the clamp portion 32 down tightly on the covers. Thus the holddown will pass over the hinge portion I5 freely but will gradually move down to hold the covers in their proper position against the resiliency of the filler material in the filler holder.

The pusher includes thepusher rod 33 which is slidable in

bearings

34 and 35 and has two keyways extending throughout the length thereof as indicated at 36 and 31, though a

single keyway

36 or 31 could .be used by: having both clutching mechanisms operating in the same plane, though the two at right angles is preferred The pusher head is mounted on the inner end of the pusher rod and consists of amain head 38 with adjustable wings 39 secured in adjusted position, by the wing nuts 40, thus permitting adjustment of the width. of the head in relation to the adjusted width of the filler holder.

The invention comprises the feeding mechanism for the pusher rod, which consists of a sleeve 4| which is slidable on the pusher rod and has a longitudinal slot 42 formed in its underside spanned by ears 43 between the ends of which is pivoted a dog 44 as indicated at 45, and this dog has teeth 46 to engage the bottom surface of the keyway, and terminates at the other end in a lever 41 which is connected to the foot treadle 23 through a link 48, bellcrank lever 49 which is pivoted to the support as indicated at 50, and a rod 51 to the foot treadle.

The holding means consists of a pair of ears 52 projecting from thesideof the bearing- 35 and having a similar dog mounted therein to-cooperate with-thebottom surface of the side key.-

way 36, and instead of the lever arm on the previously mentioned dog, this dog is secured on a shaft 53 to a point below the support bracket 54, a lever 55 being mounted on the lower end of this shaft. A torsion spring is anchored at one end to a stationary member such as the lower ear 52' or to the base 56 with the other end anchored to the shaft 53 to continuously urge the dog to engage the pusher rod. A connecting rod 51 has one end attached to the lever 55 and terminates at the other end in a hand grip such as a ring 58 and is intermediately supported as indicated at 59. A compression spring fill: surrounds the pusher rod and cooperates between the hearing 34 and sleeve 4| to continuously urge the sleeve with its dog to a retracted position.

The return mechanism for the pusher rod consists of a spring drum 6| mounted in bearings 62 projecting upwardly from the bearing 35, and is provided with means for adjusting the tension of the spring therein as indicated at 63, and a chain or cable 54 has one end attached to the pusher head as indicated at 65 and has the other end attached to the spring drum and is wound about the drum. A rubber or other resilient cushion 66 is mounted at the front end of the bearing 34 to absorb the shock when the pusher rod is returned through the urgence of the spring drum.

The invention is operated as follows: The head 38 is completely retracted as shown in the drawings. The filler holder is adjusted in width to just permit the cushion cover to be slipped over the end l9.

The holddown 2B is moved around to free the covers and the covers 13 and M are opened. The filler 61, with cushion springs suitably located when used, is placed in the filler compartment, the covers are closed down, and the holddown is moved into position to clamp the covers in closed position.

The cushion cover is then slipped over the end 19 of the filler holder completely with the closed end 68 against the end I9. The foot treadle is next depressed, causing the dog 44 to engage the pusher rod and force the rod with its head 38 forward, forcing the filler into the cover while the cover is simultaneously held by the operator. Upon release of the foot treadle, the spring 69 raises the treadle and moves the lever 41 back to disengage the dog from the pusher rod, with the spring 60 simultaneously forcing the sleeve 4i back to a position against the bearing 35, and simultaneously the dog engages the pusher rod and holds it against return with the dog 44 and sleeve 4|. The next operation of the treadle again advances the pusher head and at termination of the stroke the dog 10 again grips the rod and prevents its return.

When the filler is completely compacted into the cover, the ring 58 is pulled to release the dog 18 and the spring drum through the cable 64 returns the pusher rod and head back to its retracted position shown, ready for the next operation.

We claim:

1. Means for operating the plunger of a cushion filling machine, comprising, two spaced bearings including a front bearing and a rear hearing, and in which the plunger is slidable; a sleeve slidable on said plunger between said bearings and having a longitudinal slot formed radially'in the under side; a slot formed radially in a horizontal plane through said rear bearing; two right angularly related keyways formed th u out the len th ofsai plun er; .9 3 f r each slot and slidable in said keyway and cooperative with the bottom and side walls thereof and including a feed dog and a stop dog, and each having a toothed engaging face to grip said bottom, wall; a spring for urging said sleeve against said rear bearing; means cooperating between said plunger and said rear bearing for retracting said plunger when said stop dog is released, and a connecting rod for said feed dog for initially causing the feed dog to grip the plunger followed by advance movement of the plunger when the connecting rod is pulled, with the stop dog spring-urged to grip the plunger in its advanced position, and a connection manually operable for said stop dog to release the dog for return of the plunger to its retracted position through the urgence of said means.

2. A structure as defined in claim 1, a foot treadle, with said connecting rod connecting between said feed dog and said foot treadle through an interposed bellcrank lever, and a resilient cushion mounted at the front of said front bearing and cooperative with a pusher head mounted on the forward end of said plunger for absorbing the shock when the spring drum returns the plunger to its retracted position.

3. A cushion filling machine having a frame, a front bearing and a rear bearing mounted in spaced relation on said frame, a pusher rod slidable in said bearings and having a pusher head at its forward end and having a keyway formed throughout its length, a sleeve slidable on said pusher rod and having depending ears, a compression spring cooperating between said sleeve and said front bearing for urgingsaid sleeve against said rear bearing, a dog having pivotal support between said ears and slidable said keyway to function as keying means to maintain the pusher rod against rotative movement and having engaging teeth to engage the bottom wall of said keyway, and having a depending lever extension; a treadle mounted on said frame, and means urging said treadle to a raised position, and an operative connection between said depending lever extension and said treadle for initially creating positive engagement-of said teeth with the bottom wall of said keyway due to the urgence of said compression spring and there,- after advancing said pusher rod against the urgence of said compression springwhen said foot treadle is depressed, and spring urged holding means cooperative between said pusher rod and said rear bearing for securing said pusher rod against return and manually releasable at will to free the pusher rod, and means for returning said pushervrod when said holding means dog for release, and spring means for urging said teeth of said second dog into engagement with said pusher rod. a

5. Means for operating a pusher rod for a cushion filling machine comprising: a foot treadle, two spaced bearings in which said pusher rod is slidable, two angularly spaced key .75 ways formed throughout the length. of said to'said treadle and including means for urging said treadle to a raised position for releasing said second toothed dog from said rod, whereby depression of said treadle will cause the second toothed dog to grip said pusher rod at the bottom of said other keyway, followed by advance of the pusher rod, said means for urging said treadle returning said sleeve to its initial position when the treadle is released, and means for returning the pusher rod to its initial position when said first toothed dog is released.

6; Operating means for the plunger Qiif a cushion filling maohine comprising; a pusher rod having a head and two right angu-l "related keyways extending throughout the Len hot the pusher rod, two bearings spaced apa and in whichsa-id pusher rod is slidable, a' sleeve'slidable on said pusher rod between said bearings, a first gripping member operating through a slot provided in said sleeve and engaging the bottom wall of one of said keyways for gripping said pusher rod at any point, a foot treadle, and 'a connection from said foot treadle to said first gripping member for initially causing said first gripping member to grip the pusher rod followed by advance of the pusher rod, a second gripping member and spring urging means therefor and engaging the bottom of the other keyway for holding the pusher rod at any point in its advanced position following each depression of said foot treadle, and} means for manually releasing said second gripping member at will, and means for retracting said pusher rod to an initial position when said mean for manually releasing is actuated, saidgripping means coincidently cooperating with the side walls of said keyways to retain said pusher rod against rotative movement.

HERMAN FERRIER.

NORMAN J. NISH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATESgPATENTS