US1874876A - Pressing machine - Google Patents

Description

Aug. 30, 1932. P, BRAUN I 1,874,876

PRESSING MACHINE Original Filed July.3, 1924 2 sheets sheet l INVENTOR.

ATTORNEYS,

Aug. 30, 1932. N BRAUN 1,874,876

PRESSING MACHINE Original Filed July 3, 1924 ZSheets-Shet 2 INVENTOR.

A TTORNEY-S.

orportion thereof on which the buck 1 is mounted.

The driven'shaft 19 extends in a dlrectlon crosswise of the driving shaft 18 and is journaled in a suitable housing 21 supported by the frame beneath the table'on which the buck is mounted and the clutch mechanism is also located in the housing 21.

I The driving shaft 18 is here shown, as having a worm 2 2 thereon within-the housing 21, a this worm meshing with a worm wheel 23 ing to hold the section 24 in its shifted position is discontinued. The pins 25 are guided in a guide ring 27 mounted ad acent to wheel 23, and the motion of the shiftable member 24 is transmittedto the pins through a pressure ring 28, throughwhich the pins slide, and comparatively light springs 29 interposed between the pressure ring and the section24. The ring 28 thrusts against shoulders 30 on the pins 25. In the event the pins 25 are not alined with the holes 26 when the section 24 is shifted, the springs 29 will compress and these springs 29 will shift the pins into the holes 26 when the pins come into alinement with the holes 26. A main spring 31 shifts the clutch section 24 to its out position. p

The clutch is shifted to its in position by angular, one arm portion thereof extending upwardly and having an arm 35 extending horizontally under the table on which the buck is mounted. The means for operating the arm 35, as here shown, consists of an electromagnetwhich in the present form of my invention is a solenoid 36 supported in a case 37 carried by the frame 4, the core 38 of the solenoid being connected by a pinand-slot connection 39 to the arm 35 of the wylever 34. Obviously, when the solenoid is energized, the core .38 will be pulled downwardly, and the lever 34 will be actuated to shift the clutch section 24 to'the left, Figure 4, and carry the. pins 25 into interlocking engagement'with the worm wheel 23 which constitutes a drive wheel. 'The solenoid is controlled by two normally open manually V The shaft 19 is connected to the power arm 16 in any suitable manner, and as shown in Figure 1, 1t is provided with an eccentric power arm 16.

-To close the press, both switches 4O m ustbe closed and held closed-so that the solenoid 36 is energized to cause the core 38 to be pulled downwardly and thus actuate the lever 34 to move theshifter arm 32 to the left and shift the clutch section'24to' carry the pins 25 into interlocking; engagement'with the driving wheel 23.

If the operator holdsitlie switches 40 closed, the press head 2 will. bebrought'down to its fully closed position, it requiring ahalf revolution of the shaft19 to close the press and apply pressure thereto. If however, the. operator releases either one or both of theswitches 40,the press head will immediately stop. Thus the operator must keep'both hands busy while the press is closing, so that there is no possibility of his having either one of his handsv between the pressing elements while the press is closing. Preferably to open the press but a momentary closing of the switches 40 is, required in order to shift the clutch 24 to its in position and means is provided for holding the clutch section .24 in its in position during the opening movement of the press. This means comprises a cam ring 46 carried by casing 21 and arranged concentric with the shaft 19 and a follower 47 carried by the clutch section 24 and co acting with the cam ring. Substantially one half of the cam ring is formed with the low surface 48 and the other half with the high surface 49, these surfaces beingsubstantially semi-circular.

When the press is open, the follower 47 is at the starting end of the low surface 48 and .44, which is connected by a link to the v during the closing'movement of the head 2,,

the follower is spaced'apart from this low surface and remains spaced, apart therefrom as long as the operator holds both switches 40 closed. i

The operator determines by the feel of the machine when the press is closed and releases either or both of the push buttons 40 when the press is closed. At the starting of the closing'movement, the eccentric'44 is in its position shown in Figur 1, and at the end of theclosing movement, it'is in the diametrical- 1y opposite position and remains in its diametrically opposite position while the press I is held closed.

To open the press, both switches 40 are mo- I initial part ofthe turning of the-clutch secinvests" tion 24, the follower 47 is carried onto the high part 49 of the cam and this high part ofthe cam holds the clutch in its in position while the shaft is making a' h'alf revolution back to the position shown in Figure-1.

' The electric motor is merely a prime mover. It is connected in any suitable feed circu t and is constantly running while the machine is being used, .it running idly after the press is opened and after it is closed. It performs.

work only during thelclosing of the press when :the clutch sections are engaged; and during the opening ofthe press *when the clutch sections are engaged. During. the

opening movement, the work on :the motor is momentary. The motor may be replacedby any other prime mover or by a pulley. The electric circuit in which the windings of the electro magnet are connected and also inwhic'h the push buttons or control switches 40 are connected may be connected in any suitable feed circuit of sufiicient capacity to energize the magnet. For convenience, the circuit for the magnet is connected to the same service wires or feed circuit as those to which the motor is connected, although the energizing of the magnet is in no way coordinated with the operation of the motor since the motor isconstantly running. v

In Figure 3, I have shown a pressing machine with a different form of toggle mechanism, and in this machine, the head 2 and front arm of the yoke 7 substantially counterbalances the weight 10 and other parts con nected to the rear armof the yoke, so that the head stays in any position :it is placed.

In the machine shown in Figure 3, the operator preliminarily closes the press by pulling down on the handle 51on the front end of the yoke 7 and the head being counterbalanced stays in this position. The operator then closes both switches 40, so that the power is applied to the power arm 52. This power arm is here shown as a lever pivoted at 53 between its ends and the motion of the lever transferred to the yoke 7 through toggle links 54 and 55 pivoted together at 56 and pivoted respectivelyat'their ends to the rear arm of the yoke 7 and to the frame. The link 55 is preferably pivoted on the same pivot 53, that the power arm 52 is mounted on. The links 54 and 55 are so arranged that they are normally in an ineffective position, to apply pressure to the head 2, when the press is open, but are moved into effective position to receive and transmit the power of the lever 52 when the press has been preliminarily closed. The connections between the power lever 52 and the toggle comprises a link 57 pivoted at 58 to the rear arm of the pOwer lever 52 and connected at its upper end to an extension 59 of the link 54'by a pin-and-slot connection 60. 1

When the press head is open or up, the link 57 extends rearwardly nearly horizontally and hence 'will idle, if the power is applied to the lever 52 and this lever 57 will also idle until the toggle links 54 and 55 have been brought into a nearly straightened position or a position assumed when the head 2 has been broughtdown close to the buck 1; The

construction and operation-of the't'ogglelink-f age forms nopart of this invention." a .In Figure 3, the arm 52 isoperated by an" eccentric 61 mounted on the intermittently operated shaft 62, theeccentriccoacting with a face 63 on the power lever 52. The power leveris caused to follow the cam or eccentric 62, during the opening of the press by; a spring 64. v 1

Both forms of pressingma'chines embody a periodic" clutch mechanism operable to close the press by a solenoid or electromagnet and the control "of the clutch mechanism by a solenoid or electromagnet.

The control of theopening and closing of a garment and laundry press having two movements, one a closing movement and the other an opening movement, is the essential feature of'this invention. i

What I claim is: V p Y 1. In a pressing machine the combination of cooperating pressing elements,-one mov able toward and from theother, mechanism for applying pressure to the movable ele} ment comprising a constantly rotating driving member, an intermittently movable driv en member, a periodic clutch for connecting the driving and driven member, the clutch comprising a section normally out of clutchof cooperating pressing elements, one of which is movable toward andfrom the other, means for movingthe movable elementto close the press and apply pressure to the. movable element, and to open the press, and

controlling. means for said mechanismcomprising an electromagnet and a plurality of manually operable normally open switches, the switches being connected in series in the circuit of the electromagnet, and means for, controlling the opening movement of the press independently of the electromagnet after the el'ectromagnet has been momentarily I energizedby the closing of the switches.

"3. In a garment orla-undry pressing Ina-- chine in combination cooperative pressing elements one of which is'movable with respect 7 to the other; operating jmechanism for the movable pressing element; a power means; a clutch for connecting the power means with the operating mechanism; a pair of manuals V for controlling the clutch, both. of which must manuals, during be operated to cause the clutch to engage; and

means operable upon release of either of said manuals,= during closing movement of the press,-fo r disengaging the clutch so that the closing movement will stop.

4. In a garment or laundry pressing ma chine in combination cooperative pressing elements one of which is movable with respectto' 7 the other; operating mechanism for the movable pressing element; a power means; a clutch for connecting the power means with he operating mechanism; a pair of manuals for controlling the clutch, both of which must be operated to cause the clutch to engage;

means operable upon release of either of said closing movement of the press, ifor disengaging the clutch so that the closing movement will stop; and means to immediately return the press to open position when the closing movement is thus interrupted by release of one of the clutch control manuals.

'5. In "a garment or laundry pressing machine in combination cooperative pressing ele ments'oneof which is movable with respect to the other; operating mechanism for the movable pressing element; operator operated electric means for controlling the operat ing mechanism toopen and close the press;

mechanism to render the operating means ineffective if the operator operated means is released; and means to prevent operation of said mechanism during the opening'movesaid electrically operated control means during the closing of the press, h I

7. In a garment or laundry pressing machine in combination cooperative pressing elements one of which is movable with respect to the other operating mechanism for the movable pressing element including a shiftable clutch for connecting the operating mecha- 'nism wlth a power source; electrically operated control means for engaging the clutch to open and close the press; means for disengaging the clutch upon release of said electrically operated control means during the closing of the press; and means to prevent operation of the clutch disengaging means during the opening of the press.

8. In a garm'entfor laundry pressing ma;

movable pressing element; a constantly run ning electric motor; a clutch for connecting the electric, motor with the operatingrmechanism; ,electricallyoperated means'for controlling the clutch including a pair of manually operated switchesgboth of .whiclrmust be closed to cause the clutch to engage; means normally holding saidswitch es in open position; and means operable upon release of either 01 said switches, duringclosing movement of the press, for disengaging the clutch so-that the closing movement will stop.

7 9. In a garment or laundry pressing machine in combination cooperative pressing elements one 01"". which is movable with respect to the other; operating mechanism for the movable pressing element; a constantly running electric motor; a clutch for connecting the electric motor with the operating mechanism; electrically "operated means for controlling the clutch including a pair of m'anu ally operated switches, both of which must be closed to cause the; clutch to engage; means normally holding said switches in open position; means operable upon release'of either oi said switches, during closing movement of the press,- for disengaging the clutchso' that the closing movement will stop; and means to immediately return the press to open position when the closing movement is thus interrupted by release of one ofsaid switches. V

In testimony whereof, I have hereunto signed myname, at'Syracuse, in the county of Onondaga, in the State of New York, this 26th day of June, 1924:.

' PHILIP N. BRAUN, I

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