US1688920A - Pressing machine - Google Patents

Description

PRESSING MACHINE Filed Oct. 22, 1927 A TTORNE Patentes oa. ze, 192s.

,UNITED STATES 1,688,920 PATENT oFF-lcs.

ERNEST DAVIS, 0F SYRACUSE, NEW YORK, ASSIGNOR TO THE PROSPERITY COMPANY,

IN C., 0F SYRACUSE, NEWl YORK, A CORPORATION OF NEW YORK.

rnEssINe MACHINE Application led October 22, 1927. Serial No. 228,042.

This invention relates to power operated pressing machines as garment and laundry pressing machines and has for its object means for retarding the closing movement of the press under the iniiuence of power mechanism, and retarding or braking'the closing movement just prior to the final closing movement.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is an elevation of a pressing machine embodying my invention.

Figure 2 is a fragmentary rear elevation. Figure 3 is a fragmentary detail view of the retarding or braking means.

Figure 4 is an venlarged fragmentary'view of parts seen in Figure 1, parts being omitted. Figure 5 is a sectional view of a modified form of the retarding and counterbalancmg mechanism. l

As here illustrated, my invention is embodied in the conventional type of pressing machine comprising a frame 1, a stationary buck 2 mounted on a bracket 3 which in turn 1s mounted on a bench 4 forming part of the frame, a head 6 movable toward and from the buck and carried by a lever 7 pivoted at 8 between its end and to the standard 9 rising from the frame and carrying the head at its front end, and power means connected to the rear end of the lever which closes the head.. The head is opened when the power is released by countersprings or weights or both.

The power means here shown comprlses a cylinder 10, a singleacting piston 11 movable in the cylinder and having its rod 12 .lvoted at 13 to a combined lever and pull ink 14 which is ivoted to one link 15 of a toggle, the other link 16 of which is pivoted at 17 to the rear arm of the lever 7. The links 15 and 16 are pivoted together at 18. The construction, per se, of this mechanism forms no partei: my mvention. In so far as this invention 1s concerned any actuatin mechanism can be used. Also the control of t e flow of motive Huid as air to and from the cylinder may be of any The mechanism for retarding or braking the closing movement of the head 6 as it appreaches the buck 2 is normally idle or idle during the movement of the-press head until the pressing elements are nearly in closed position and .said Ymechanism comprises two members connectedtogether by a lost motion connection, one member being connected to the lever 7 to move therewith and take up the lost motion as the head 6 approaches its closing position.

The mechanism here shown is a tension spring 2O anchored at one end 21 and a rod 22 connected at one end to the lever 7 and at its other end to the spring or to the spring abutment 23 by a sliding, lest motion connection. The retarding or braking mechanism is here shown as combined with the counter-balancing spring. The lower end of the spring 20 is y fixed to an anchor 2l which is secured by a bolt 24 to an abutment 25 mounted on the'side l `from the abutment 23 and movable into engagement with the abutment as the head 6 approaches its closed position. The upper end of the rod 22 is secured to a connector or abutment 27 which is Aconnected to the lever 7.

This abutment 27 also forms part of the counterspring mechanism.

4In operation, when the air or other motive fluid flows into the upper end of the cylinder 10, the piston ll'starts down on its power stroke and moves the head 6 from opento closed position and during the movement gains momentum so that it ordinarily` actson the piston to apply heavy pressure and to move the head into final pressing position against the action of the brakev sprlng 20.

To open the press, the air is released. or exhausted .from the cylinder l0 when the spring-is :tree to reactand open the press. However, additional springs are also provided for opening the press.

- the lever 7 on each side thereof adjacent the -retarding brake spring. Each spring 28 is anchored at its lower end at 29 to the abutment 25 and is secured by means of a bolt 30 to the connector or mounting 27 in front and in the rear of the rod 22.

In order to adjust the leverage of the springs 28 on the rear end of the lever 7 the connector 27 is mounted to be shifted relatively to the axis of the leverl7 and as here illustrated, each connector 27 fis pivoted at 31 to a carrier 32 pivoted at 33 to the rear arm ofthe lever 7 and normally arranged at an angle to the lever and movable into different radial positions to carry the pivotal point 31 toward and from the axis of the lever`7. The carriers 32 are connected by a cross bar 32a.

It is held in its adjusted position relatively to the lever 7 by'alink 34 pivoted at 35 to the carrier and adjustably secured to the lever 7. As here illustrated the link 34 eX- tends through an,eye 37 on each side of the lever 7 and nuts 38 thread on the link against opposite sides of the eye 37 Obviously, to adjust the position of the carrier 32 one nut may be loosened and the other tightened until the desired angle ory position of the carrier 32 is obtained. Usually an additional spring 39 is employed, this acting upon the combined lever and pull link 14.

In Figure 5 another assembly of the retarding and countersprings is shown in which the retarding spring 40 is located within a countersprmg 41.v

f What I. claim is:

1. A pressing machine comprising a pair which is movable toward and from the other,

motor means for actuating the movable element, and retarding mechanism normally idle and arranged to come into action to act against the motor means as the movable element approaches its final pressing position.

2. A pressing machine comprising a supporting frame, apair of co-operating pressing elements one of which is movable toward and from the other, motor means for actuating the movable element, and means for acting against the motor?y means for retarding .the closing movement of the movable element as it approaches its final pressing position, including members connected together by a lost motion connection and one being connected to the movable element to be moved thereby to take up the lost motion and the other being connected to the lframe.

3. .A pressing machine comprising a supporting frame, a pair of co-operating ressing elements one of which is movab e toward and'irom the other, motor means for actuating the movable element, and means for acting against the motor means for Aposition with the other member to tension the spring as the movable element approaches its -inal pressing position and the spring being connected to the frame.

4. A pressin .machine comprising a pair of co-operatin pressing elements one of which is movable toward and from the other, means for actuating the movable element including a cylinder, a single acting piston movable in the cylinder and motion transmitting mechanism between the piston and the movable element, and mechanism acting against the piston to brake the closing movement ofthe press as it approaches its closed position.

5. A pressing machine comprising a supporting frame, a pair of co-operating pressing elements one of which is movable toward and from the other, means for actuating the movable element including a cylinder, a

single acting piston movable in the cylinder i and motion transmitting mechanism between the plston and the movable element, and

mechanism acting against the piston to brake the closing movement of the press as it approaches its closing position, said mechanism comprising a spring member and a motion transmitting member connected together by a lost motion connection, one of said members being connected to the movable element and the other being connected to the frame.

6. A pressing machine comprising a frame, a buck mounted on the frame, a head movable toward and from the buck, a lever pvoted to the frame and supporting the head, motor means for actuating the lever, a retarding device including members connected together by a lost motion connection, one of said members being connected to the lever to be actuated thereby to take up the lost motion as the head approaches'closed position and the other being connected tothe frame.

7. A pressing machine comprising a frame, a buck mounted on the frame, a head movable toward and from the buck, a lever pivoted to the frame and carrying the head, a cylinder, a single acting piston movable in the cylinder and motion transmitting means between the piston and the lever, and retardling means comprising two members connecta buck mounted on the frame, a head movable toward and from the buck, a lever pivoted to the frame and supporting the head, mechanism connected to the lever to move it in one direction to close the head to the buck and a counterspring connected to the lever and tending to move the lever in opposite direction, an adjustable connection between the spring and the lever comprising a carrier pivoted to the lever, the spring having a mounting pivoted to the carrier at a point remotevfrom its pivot and the carrier being arranged to move on its pivot toward and from the pivot of the lever and means for moving it and holding it in its adjusted position and thereby varying the leverage of the spring on the lever.

9. A pressing machine comprising a frame, a buck mounted on the frame, a. head movable toward and from the buck, a lever pivoted to the frame and supporting a head, mechanism connected to the lever to move it in one direction to close the head onto the buck, a counterbalancing 'spring connectedv to the lever to move it in opposite direction, an adjustable connection between the spring and the lever comprising a carrier pivoted to the lever and extending at anangle to the lever, the spring having a connector pivoted to the carrier at a point remote from the pivot of the carrier,-a link pivoted ,to the carrier to move it on its pivot, means on the lever coacting with the 'link normally holding the link and the carrier from movement relatively to the lever.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, and in the State of New York, this 8th day of October, 1927.

ERNEST DAVIS.

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