US1629091A - Pressing machine - Google Patents

Description

Ma 17 1927. 1 y A. B. CLISSON PBESSING MACHINE -Filed June 18. 1924 2 Sheets- Sheet 1 I N VEN TOR.

ATTORNEYS May 17, 1927- B. CLISSON PRESSING MACHINE Filed Jun 1a. 1924 z sheets-sheet 2 ATTORNEYfi,

Patented May 17, 1927.

1,629,091 PATENT} oF ic arm-mar n. ca sson,- or sYnAcusn, NEW YORK, assrenon, BY masnn assionmnms -l ".ro 'rnn rnosrsm'rv COMPANY, 1110., or svnacusn, New, YORK, a ooaroaarron or NEW YORK.

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Application filed June 1a, 1924. serial at. 720,869.

Thisinvention relates to pressing machines such as garment and laundry pressing machines, and has for its object a particularly simple mechanism for transmitting the 6 power from the power memberv to the movable pre sing element or head, by which mechanism the movable element or head must be moved preliminarily toward a closed position before the motion transmitting mechanism is brought into position to effectively transmit the power from the power 1 member, and by which mechanism dead centers in the motion transmitting mechanism are eliminated or the effect of such dead centers avoided.v a I invention consists in the novel features andin the combinations and constructions hereinafter-set forth and claimed. In describing this invention reference is 9 had to the accompanying drawings in which like characters designate corresponding parts in all the views,

Figure 1 is the side elevation of a machine embodying my invention. Figure 2 is a detail view of the 'linkwhich includes the endwisely movable sections. Figure 3 is a view similar to Figure 1, parts being omitted showing the position of the parts when the press is in closed position.

of the movable element toward a closed po-- .sition independently of the power member. 1 Such connections include a pair of links, one

of which is pivotally connected to the frame independently of the power member'and the other of which is pivotally connected to theower member, these links normally extendmg in the same general direction and lo cated to have a parallelogramlike action when tli'ebrac'e is open, and being movable toward a? converging position when the'br'a'ce is preliminarily closdi- Figure 4 is a similar view showing the po- One of suchlinks includes endwisely movable sections and a spring for restraining such ndwise movement. I 1

The numeral 1 designatesthe frame, which may be'of any suitableform, size and construction, itbeing here illustrated as including one or more legs pr pedestals 3, 4. The numerals 4 and 5 designate respectively the cooperating pressing elements. The element 4 is shown as a stationary buck mounted on a bracket 5. which in turn ismounted upon the frame 1.

counter-weight is carried on the rear arm of the lever.

11 is the power member, it being usually a lever pivoted between its ends at 12 to the frame near the base thereof, and nearly in the vertical line with the pivot 8, this lever being actuated by a power mechanism. Theconnections between the. power member and the movable element 5 or the yoke or lever 7, comprises toggle mechanism including a' link 13 pivoted at 13' to the rear arm of the yoke or lever 7. A second toggle link 14, is pivoted at 15 to the link 13 and to the frame, it being preferably pivoted to the I same pivot 12 that the power lever 11 is mounted on, and a third link 16 is pivoted to the rear arm of the lever 11 and to one of the former links. The link 16 normally extends horizontally in the same general direction as the link 14, but .diverges from tlielink 14.

The link 16 is pivoted at its rear end to an extension 17 of the link 13, which exten sion projects below or beyond the point 15 or toggle links 13, 14. This link 16 is movable upwardly and forwardly during the preliminarily closing movement of the press head. and assumes a converging relation with v the link 14; such movement being due to the fact that the link 16 is shorter than the link 14. The link 16 is connected to one of the parts by a lost motion connection, here shown as a pin-and-slot connection. shown formed on the extension 17 and the slot 19 in the'link 16. Owing to the arrangement of the second and thirdlinks', that is, the links; 14 and 16 and tlie extension 17,

The pin 18 is constitutes a to gle.

these links 14 and 16 have a parallelogramlike action.

One of the links 14 and 16 is composed of sections having relative endwise movement, and a spring for resisting such movement. In this embodiment of my invention, the link 16 is shown as formed of sections 20 and 21 movable'relatively to each other and a spring for resisting such movement.-

The sections 20 and 21 are slidably mounted upon a rod 22 arranged in axial passages in these sections and the springfencircles the rod and thrustsat its "ends against the sections.

In operation during the preliminary clos ing of the press head by pulling down on tion thereof transferred upwardly through the link 16 and extension 17 of the link 13, to move such links 13 and 14 toward the dead center line of the links 13, 14 which However, after the power is applie to the lever 11 before the press has been preliminarily closed or while the head 5 is in an intermediate position the lever 16 will merely idle and not transfer any movement.

There is a dead center region of the links 13, 14 and 16 where the power, if applied,

does not transmit the motion but tends to stall the machine or the motor, or burn out the motor or the fuses in the service wires. In order to eliminate such stalling and'other results the link 16 is formed of relatively movable sections and, therefore, when the links 13, 14 are at such a dead center or neutral point, the spring 23 compresses and no motion is transferred to the head. The arrangement of the links 13. 14 and 16 is such that the head must be brought to the safety first position, where the head practically touches the work on the buck 4. It is when the head is not brought down quite to this safety first position that the spring 23 acts to avoid stalling of the mechanism.

The means for applying power to the lever llmay be of any suitable form, size'and construction, and includes generally a rotatable cam shaft 25 actuated by a constantly running electric motor 26, which is connected to the cam shaft 25 through gearing and a periodic clutch located within the housing 32. The shaft is rovided with a cam or eccentric 30 whic coacts with the face 31 on the outer end of the lever 37. The periodic clutch is thrown in by hand through suitable mechanism including the handle 41",

mounted on a rock shaft 41" having an arm 43 thereon .coacting with a lever arm 44,

which acts to shift the clutch section to its dle -24 and then depresses the handle 41 to throw in the clutch whereupon the shaft 25 makes a half revolution from the 'position shown in Figure 1 to that shown in Figure 3. In making such half revolution the cam depresses the power member 11- and after the links 13, 14 have been nearly straightened by the preliminary closing movement, the power of thelever 11 will be applied to .the head 5 to apply vfinal pressure or completely close the press. To open the press the operator depresses the handle 41 to again throw in theclutch, and the shaft 25 makes another half revolution permittin the head2 to o 11 under the influence of the counterweig t 10 and the links When the power is applied before the preliminary closing movement is completed, the power lever and links merel idle, and after the operator has released is hold on the handle 24, the head 5 will open under the influence of the counter-Wei ht.

After the power is applie and the links are at the dead center point or re 'on, the spring 23 of the links 16 will yiel and no power will be transmitted, it being understood that when at this dead center point the link 13 and lever 7 are stalled or will not move, but as the power lever 11 is being moved by the cam and hence actuating the links 16 something has togive, as the pin 18 comes to the lower end of the slot 19, and the link 16 is provided to yield or 3 give under these conditions.

In the event the operator operates the handle 41 to throw the clutch in before the head has been preliminarily closed, or before it has been brought down to aposition close to the buck 4 or the work thereon, the shaft 19 makes a half revolution and depresses the lever 11, but on account of the arrangement of the links 13, 14 and 16, the link merely idles, and transmits no motion. However, the sequence of the mechanism is now upset and in order to restore the sequence the handle 41 must be again operated to cause the shaft 25 to make another idle half revo- 1 lution.

What I claim is:

1. In a pressing machine, a frame, cooperating pressing elements supported by the frame and one being supported to move toward and from the other, and means for actuating the movable element comprising a power member and toggle mechanism between the power member and the movable element, the toggle mechanism comprising a link pivotally connected to the movable element, a second link pivoted to the first link and to the frame. and a third link pivoted to the power member and to one of the former links, one of said links comprising sections having an endwise movement relative to each other and a spring for resisting such endwise movement.

2. In a pressing machine, a frame, co-

' operating pressing elements carried by the frame, one being supported to move towardincluding sections movable endwise relativesuch endwise movement.

1y to each other and a spring for resisting.

3. In a pressing machine, a frame, eo-

operating pressing elements supported by the frame, one being supported by the frame to move toward and from the other, and

actuating means comprising a power member and connections between the powermemher and the movable element including parts normally out of effective connection with the power member and arranged to be moved into effective connectionby apreliminary closing movement of the movable element independentl of the power member, one of said parts including sections having movement relatively to each other and a springfor resisting such movement of the sections in one direction.

In testimony whereof, I have hereunto signed my name, at Syracuse, in the county of Onondaga, in the State of New York, this 20th day of May, 1924.

ALBERT B. oLIss'oN

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