US2005043A - Control arrangement for tandem operation pressing machines - Google Patents

Control arrangement for tandem operation pressing machines Download PDF

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US2005043A
US2005043A US686561A US68656133A US2005043A US 2005043 A US2005043 A US 2005043A US 686561 A US686561 A US 686561A US 68656133 A US68656133 A US 68656133A US 2005043 A US2005043 A US 2005043A
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press
pressing
valve
control
machines
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US686561A
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Edwin A Mall
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American Laundry Machinery Co
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American Laundry Machinery Co
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F71/00Apparatus for hot-pressing clothes, linen or other textile articles, i.e. wherein there is substantially no relative movement between pressing element and article while pressure is being applied to the article; Similar machines for cold-pressing clothes, linen or other textile articles
    • D06F71/08Apparatus for hot-pressing clothes, linen or other textile articles, i.e. wherein there is substantially no relative movement between pressing element and article while pressure is being applied to the article; Similar machines for cold-pressing clothes, linen or other textile articles wherein one or more of the pressing elements is moved laterally between successive pressing operations

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  • This invention relates to pressing machines and, particularly, to an arrangement of a plu rality of pressing machines for tandem operation and to control mechanism for such machines.
  • Tandem operation of pressing machines is well known; in the art, the primary purpose of tandem arrangement being to save the time of the operator in keeping a plurality of pressing machines simultaneously in operation.
  • two machines of standard construction and arrangement of parts are placed at right angles toeach other as, for instance, with the right front corner of one pressing machine table joining the left front corner of the other table.
  • the pressing machines are, as hereinbefore stated, usually of standard design with each machine embodying two-hand control means which necessitates the use of both of the operators hands to bring about operation of the pressing machine.
  • Such controls are usually placedone on each side of the center of each table and one control of each press is connected with a tandem valve for causing release of the second press, so that 'actuation'of the control "to close the first press causes opening of the second press.
  • the pressing elements of these machines are usually arranged in the standard position, for instance, with the narrower end of the usual elongated and tapering pressing bed or buck of each press at the same side of the press, for example, with the narrower end of each pressing bed at the right hand end of the machine.
  • a major portion, probably '75 per cent or more,-oi laundry work is pressed on the smaller end of the bed. Therefore, with such a tandem arrangement, after arranging a garment the operator is required to move from the right hand end of one press to the center of that press to operate its controls, thence to the right hand end of the other press to remove a pressed garment therefrom and to arrange another garment'thereon for pressing, and thence to the center of the second press to operate itscontrols. 4
  • One object of my invention is to provide an arrangement of a plurality'of pressing machines "which reduces the distance travelled by the operator. This is accomplished by placing the machines with the narrower ends of the tapered pressing elements adjacent eachother, and by arranging the controls of each machine near this common point.
  • Another object of my invention is to provide a control mechanism wherein a single control member has a press-opening efiect at one ma- 1933, Serial No. 686,561
  • FIG. 1 is a perspective View of two presses arranged in tandem formation in accordance with my invention
  • Fig. 2 is a view showing a control member common .to two machines
  • Fig. 3 is a diagrammatical view of the operating parts of Fig. 1 showing the tandem relation of the operating parts and controls of the-two machines; I
  • Fig. 1 The invention is illustrated in Fig. 1 as applied to two presses, A and B, arranged substantially at right angles to each other for joint operation by one operator.
  • Press A shows the pressing elements in a position just prior to the final pressing operation.
  • Press '13 shows the pressing elements in open position.
  • the pressing elements of press A are shown in position with the narrow end of the elements toward the right side of themachine.
  • Pressing elements of press 13 areshown with the narrow 35 end of the pressing "elements toward the left side of the machine.
  • the presses as they are arranged havetheir smallerends adjacent.
  • the greater proportion of the garments are drawn over and pressed on the 0 smaller end of the buck.
  • the operator stands near the intersection of the two presses or in other words in a position wherethe fewest steps are required to handle work on and offthe pressing beds of both machines. 4
  • the control levers l9 and H of press A are shown in position depressed by the operator to lower the pressing head.
  • the tandem valve l2 is mounted on a bracket'l3 in a position such 50 that the depressing'of the lever l0 opens this valve which admits air to a release cylinder ll mounted at the base of the pressB and causes the release mechanism connected with treadle i8 of the press B to be actuated and the press- 55 ing elements of that press to be moved to open position.
  • the press B is provided in similar fashion with two levers I4 and I5.
  • Lever I4 is provided in the same manner as lever I!) with a tandem valve I6 which is actuated when the control lever I4 is depressed and admits air to a tandem cylinder Ila identical with that used on press B which actuates the mechanism connected with release treadle I81]. and opens the pressing elements of press A.
  • Control II is in series with control I and air does not enter its valve until control I0 is operated.
  • control I is in series with control I4 and it likewise is second in the series andthe air does not pass through it until I4 is operated.
  • the controls II and I5 may be combined into one control. A simple manner of doing this is shown in Fig. 2 where the controls are linked together by a link I9., although it will be apparent the control'smight be redesigned and placed in one structure.
  • the power operating means. comprises acylinder 20, having a suitable piston 2
  • a valve casing 23 is mounted on top of the cylinder and contains a piston valve 24 adapted to move backward and forward to close the inlet port 25 in the forward position and the exhaust port 26 in rearward position.
  • the inlet port is connected by a conduit 21 to a source of fluid pressure supply 28 through valves 29 and 30, connected in series by suitable conduits. Valves 29 and 30 are operable by controls I4 and I5 respectively.
  • the exhaust port 26 lies between the passage 3
  • the piston valve 24 is provided with small holes 33 in the periphery of its cup such that when airis admittedthrough the port 25 the valve is forced against the exhaust port and, at the same time, fluid pressure is directed through the holes and the passage 3
  • Another valve 34 is mounted on the cylinder and is connected directly to the main fluid pressure supply. This valve is operated by the rearward movement of the piston 2
  • a bar 35 is attached to the pistonrod and operates through a guide in the rear of the cylinder.
  • the forward end 36 of the bar for a short distance is of narrower width than the remainder-such that when the piston travels to the rear, the narrower portion allows a bell crank lever 31 to rotate on its pivot 38 and opens the valve 34.
  • the foot treadle is provided with an upwardly extending portion 39 adapted to engage a bell crank lever 40 above its pivot point so that it is rotated in a counterclockwise direction.
  • a link4I connects one arm of the bell crank 40 with an arm of a bell crank 42.
  • ] pulls downwardly on link 4
  • the vertical arm of bell crank 42 is adapted to engage a cam surface 43 of the lever 31 and to rotate lever 31 in a counterclockwise direction which relieves the pressure of the arm 44 on the stem of valve 34. This operation closes the valve 34. Simul taneously the extreme upper portion of the vertical arm of bell crank 42 engages a push-rod 45 and moves it forward or to the left in Fig. 3.
  • the rod 45 engages a post on the piston valve 24 and moves it away from its engagement with the exhaust port 26 and the fluid pressure'is relieved through the passage 3
  • the release operation of the press may also be accomplished by means of a tandem valve, arranged to be actuated with movement of the control member of another press in press-closing direction.
  • a tandem valve I2 onrpressA is arranged to be opened by depression of control member II), when that member is actuated to close press A. Opening .of valve, I2 admits fluid pressure from a suitable source through conduit 41 to release cylinder I1 of press B;
  • This release cylinder has a piston 48 and plunger 43 adapted to move bell-crank 40 in counterclockwise direction,,to cause opening of press B in the same manner as described in connection with the depression of treadle I8.
  • the tandem operation of the presses is as follows: The operator arranges the lay of the work on press B and depresses controls I4 and I5. Fluid pressure flows from the main supply line 28 through valves 29 and 30, conduit 21, and port 25 in valve casing 23. t I
  • Piston valve 24 is moved against the exhaust port 26 and fluid pressure is directed through passage 3
  • valve 34 When the cutaway portion 36 of the bar 35 has reached the roller of the lever 31, the lever rotates clockwise and opens valve 34. Fluid pressure is now directed from main supply 28 through open valve 34 and conduit 34 to the head of. the piston. Fluid pressure is thereby maintained against piston 2
  • press B The elements of press B are now in final pressing position and the operator turns to press A where she removes the garment which has just been pressed and replaces it with another whereupon control handles I0 and H are depressed.
  • the cycle of operations occurs on press A which has'just been described in connection with press B.
  • My improved arrangement of the control mechanism combined with my novel arrangement of the pressing beds greatly reduces the work of an operator.
  • Standing in the angle between the two presses she is in the proper position for placing a garment on the bed of either press A or press B.
  • she depressed the controls It H and lowered the press head onto the bed.
  • the head of press B opened.
  • She now has another garment in hand and, with just a turn of the body she is in a position to place the garment on the bed of press B.
  • she depresses controls simultaneously raises the head of press A, and again she turns to press A.
  • the operator in this fashion continues pressing on both machines with a minimum expenditure of time and effort, as she does not have tomove about to reach the controls and pressing elements.
  • right and left hand pressing machines associated for tandem operation, each thereof including relatively movable cooperating pressing members narrowing toward one end, said machines being located at an angle to each other with the narrow ends of their pressing members closely adjacent the vertex of said angle, whereby both machines open toward and are controllable by an operator standing within the angle, power operating means for each machine, pressure-producing control means for each power means, and pressure-releasing control means for each power means, the control means for each machine being grouped and located nearer to its narrow than to its wider end, whereby an operator working adjacent the vertex of said angle can operate both groups of controls with minimum effort.

Description

June 18, 1935. E. A. MALL 2,005,043
CONTROL ARRANGEMENT FOR TANDEM OPERATION PRESSING MACHINES Filed Aug.. 24, 1935 2 Sheets-Sheet l INVENTOR ATTORN EYS 2 Sheets-Sheet 2 E. A. MALL Filed Aug. 24, 1933 CONTROL ARRANGEMENT FOR TANDEM OPERATION PRESSING MACHINES June 18, 1935.
r II
INVENTOR IM/1 4. /Ze// 2 11, 141% 1 7 ATTORNEYS Patented June 18, 1935 UNITED STATES CONTROL ARRANGEMENT FOR TANDENIv OPERATKQN ERESSING DIACHKNES Edwin A. Mall, Norwood, Ohio, assignor to The American Laundry Machinery Company, Cincinnati, (ihio, a corporation of Ohio Application August 24,
1 Claim.
This invention relates to pressing machines and, particularly, to an arrangement of a plu rality of pressing machines for tandem operation and to control mechanism for such machines.
I Tandem operation of pressing machines is well known; in the art, the primary purpose of tandem arrangement being to save the time of the operator in keeping a plurality of pressing machines simultaneously in operation. 1 In a usual arrangement of machines in tandem, two machines of standard construction and arrangement of parts are placed at right angles toeach other as, for instance, with the right front corner of one pressing machine table joining the left front corner of the other table. e The pressing machines are, as hereinbefore stated, usually of standard design with each machine embodying two-hand control means which necessitates the use of both of the operators hands to bring about operation of the pressing machine. Such controls are usually placedone on each side of the center of each table and one control of each press is connected with a tandem valve for causing release of the second press, so that 'actuation'of the control "to close the first press causes opening of the second press.
Likewise, the pressing elements of these machines are usually arranged in the standard position, for instance, with the narrower end of the usual elongated and tapering pressing bed or buck of each press at the same side of the press, for example, with the narrower end of each pressing bed at the right hand end of the machine. A major portion, probably '75 per cent or more,-oi laundry work is pressed on the smaller end of the bed. Therefore, with such a tandem arrangement, after arranging a garment the operator is required to move from the right hand end of one press to the center of that press to operate its controls, thence to the right hand end of the other press to remove a pressed garment therefrom and to arrange another garment'thereon for pressing, and thence to the center of the second press to operate itscontrols. 4
' One object of my invention is to provide an arrangement of a plurality'of pressing machines "which reduces the distance travelled by the operator. This is accomplished by placing the machines with the narrower ends of the tapered pressing elements adjacent eachother, and by arranging the controls of each machine near this common point. V
Another object of my invention is to provide a control mechanism wherein a single control member has a press-opening efiect at one ma- 1933, Serial No. 686,561
chine and, simultaneously therewith, a pressclosing effect at another machine. e Various other objects and advantages, of my invention will be apparent from the following description, together with the drawings, in which, Fig. 1 is a perspective View of two presses arranged in tandem formation in accordance with my invention; Fig. 2 is a view showing a control member common .to two machines and Fig. 3 is a diagrammatical view of the operating parts of Fig. 1 showing the tandem relation of the operating parts and controls of the-two machines; I
'While my improved tandem arrangement-and control mechanism may be used with any type of press, I'have chosen to illustrate the same as applied to presses of thetype illustrated, described and claimed in the copending application of John P. Singiser, Serial No. 642,053, filed "Noyember '10, 1932. I will therefore give a sufficient description of the operating parts of such apress to permit an understanding of the present inven tion, reference being had to the above-mentioned application for further details, if desired. I
The invention is illustrated in Fig. 1 as applied to two presses, A and B, arranged substantially at right angles to each other for joint operation by one operator. Press A shows the pressing elements in a position just prior to the final pressing operation. Press '13 shows the pressing elements in open position.
The pressing elements of press A are shown in position with the narrow end of the elements toward the right side of themachine. Pressing elements of press 13 areshown with the narrow 35 end of the pressing "elements toward the left side of the machine. Thus the presses as they are arranged havetheir smallerends adjacent. In laundry practice the greater proportion of the garments are drawn over and pressed on the 0 smaller end of the buck. Thus in operation, the operator stands near the intersection of the two presses or in other words in a position wherethe fewest steps are required to handle work on and offthe pressing beds of both machines. 4
' The control levers l9 and H of press A are shown in position depressed by the operator to lower the pressing head. "The tandem valve l2 is mounted on a bracket'l3 in a position such 50 that the depressing'of the lever l0 opens this valve which admits air to a release cylinder ll mounted at the base of the pressB and causes the release mechanism connected with treadle i8 of the press B to be actuated and the press- 55 ing elements of that press to be moved to open position.
The press B is provided in similar fashion with two levers I4 and I5. Lever I4 is provided in the same manner as lever I!) with a tandem valve I6 which is actuated when the control lever I4 is depressed and admits air to a tandem cylinder Ila identical with that used on press B which actuates the mechanism connected with release treadle I81]. and opens the pressing elements of press A.
It will be noted that the presses of Fig. 1 are arranged angularly with respect to each other and that the control levers are positioned on the side of the longitudinal center of each press toward the vertex of the angle.
Control II is in series with control I and air does not enter its valve until control I0 is operated. Likewise on press B control I is in series with control I4 and it likewise is second in the series andthe air does not pass through it until I4 is operated. Thus,'if it is so desired, the controls II and I5 may be combined into one control. A simple manner of doing this is shown in Fig. 2 where the controls are linked together by a link I9., although it will be apparent the control'smight be redesigned and placed in one structure. I
The power means and control mechanism of press A are identical in construction with that of press B and will be described in connection with press B only, similar parts on press A being similarly numbered, with the addition of the su'flix a. s p v Referring now to Fig.3, the power operating means. comprisesacylinder 20, having a suitable piston 2|, and a piston rod 22 operatively connected. tothe to gle members of the press, not shown. A valve casing 23 is mounted on top of the cylinder and contains a piston valve 24 adapted to move backward and forward to close the inlet port 25 in the forward position and the exhaust port 26 in rearward position.
The inlet port is connected by a conduit 21 to a source of fluid pressure supply 28 through valves 29 and 30, connected in series by suitable conduits. Valves 29 and 30 are operable by controls I4 and I5 respectively. The exhaust port 26 lies between the passage 3| of the cylinder and a muffler 32. The piston valve 24 is provided with small holes 33 in the periphery of its cup such that when airis admittedthrough the port 25 the valve is forced against the exhaust port and, at the same time, fluid pressure is directed through the holes and the passage 3| to the cylinder. Another valve 34 is mounted on the cylinder and is connected directly to the main fluid pressure supply. This valve is operated by the rearward movement of the piston 2|. For this purpose a bar 35 is attached to the pistonrod and operates through a guide in the rear of the cylinder. The forward end 36 of the bar for a short distance is of narrower width than the remainder-such that when the piston travels to the rear, the narrower portion allows a bell crank lever 31 to rotate on its pivot 38 and opens the valve 34.- When the cutaway portion of the rod 35 has reached the position as described above, the piston through its connection with the toggle members of the press has caused the press head to lower into contact with the bed. Thus, when the valve 34 is opened, it directs the fluid pressure in the main supply through conduit 34 directly tothe head of the piston and seals the pressing elements in their pressing position. Up to the time that the cutaway portion hands of the operator are occupied until thepressing elements are in contact. Then upon operation of the valve 34 as just described the operator may release the control levers I4 and I5 and fluid pressure on the piston will be maintained.
To release the pressure and raise the press head, the operator may step on the foot treadle Ill. The foot treadle is provided with an upwardly extending portion 39 adapted to engage a bell crank lever 40 above its pivot point so that it is rotated in a counterclockwise direction. A link4I connects one arm of the bell crank 40 with an arm of a bell crank 42. The counterclockwise movement of the bell crank 4|] pulls downwardly on link 4| and rotates bell crank. 42 I in a counterclockwise direction. The vertical arm of bell crank 42 is adapted to engage a cam surface 43 of the lever 31 and to rotate lever 31 in a counterclockwise direction which relieves the pressure of the arm 44 on the stem of valve 34. This operation closes the valve 34. Simul taneously the extreme upper portion of the vertical arm of bell crank 42 engages a push-rod 45 and moves it forward or to the left in Fig. 3.
The rod 45 engages a post on the piston valve 24 and moves it away from its engagement with the exhaust port 26 and the fluid pressure'is relieved through the passage 3|, the exhaust port 26 and mufiler 32 to the atmosphere.
The release operation of the press may also be accomplished by means ofa tandem valve, arranged to be actuated with movement of the control member of another press in press-closing direction. Thus a tandem valve I2 onrpressA is arranged to be opened by depression of control member II), when that member is actuated to close press A. Opening .of valve, I2 admits fluid pressure from a suitable source through conduit 41 to release cylinder I1 of press B; This release cylinder has a piston 48 and plunger 43 adapted to move bell-crank 40 in counterclockwise direction,,to cause opening of press B in the same manner as described in connection with the depression of treadle I8. The tandem operation of the presses is as follows: The operator arranges the lay of the work on press B and depresses controls I4 and I5. Fluid pressure flows from the main supply line 28 through valves 29 and 30, conduit 21, and port 25 in valve casing 23. t I
Piston valve 24 is moved against the exhaust port 26 and fluid pressure is directed through passage 3| to'the head of the piston 2|. The
piston moves rearwardly or to the right in Fig. 3;
When the cutaway portion 36 of the bar 35 has reached the roller of the lever 31, the lever rotates clockwise and opens valve 34. Fluid pressure is now directed from main supply 28 through open valve 34 and conduit 34 to the head of. the piston. Fluid pressure is thereby maintained against piston 2| and the operators hands may be removed from the control levers I4 and I5. Simultaneously with the operation of depressing the lever I4, the tandem valve I6 is opened and fluid pressure flows from the main supply through valve I6 and conduit 41a to cylinder I1a. The piston 48a is moved to the right, plunger 49a engages the vertical arm of bell-crank 40a, which opens exhaust port 26a and closes the maintaining inlet valve 34a of press A, and causes opening of that press. The elements of press B are now in final pressing position and the operator turns to press A where she removes the garment which has just been pressed and replaces it with another whereupon control handles I0 and H are depressed. The cycle of operations occurs on press A which has'just been described in connection with press B.
My improved arrangement of the control mechanism combined with my novel arrangement of the pressing beds greatly reduces the work of an operator. Standing in the angle between the two presses she is in the proper position for placing a garment on the bed of either press A or press B. Thus, assume that she has just placed a garment on press A and, without leaving her position, she depressed the controls It) and H and lowered the press head onto the bed. Simultaneously with the lowering of the head of press A, the head of press B opened. She now has another garment in hand and, with just a turn of the body, she is in a position to place the garment on the bed of press B. When this 5 lay has been completed, she depresses controls simultaneously raises the head of press A, and again she turns to press A. The operator in this fashion continues pressing on both machines with a minimum expenditure of time and effort, as she does not have tomove about to reach the controls and pressing elements.
What I claim is:
In combination, right and left hand pressing machines associated for tandem operation, each thereof including relatively movable cooperating pressing members narrowing toward one end, said machines being located at an angle to each other with the narrow ends of their pressing members closely adjacent the vertex of said angle, whereby both machines open toward and are controllable by an operator standing within the angle, power operating means for each machine, pressure-producing control means for each power means, and pressure-releasing control means for each power means, the control means for each machine being grouped and located nearer to its narrow than to its wider end, whereby an operator working adjacent the vertex of said angle can operate both groups of controls with minimum effort.
EDWIN A. MALL.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563104A (en) * 1947-10-11 1951-08-07 United Shoe Machinery Corp Control mechanism for presses
US3126658A (en) * 1964-03-26 1964-03-31 carskadon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563104A (en) * 1947-10-11 1951-08-07 United Shoe Machinery Corp Control mechanism for presses
US3126658A (en) * 1964-03-26 1964-03-31 carskadon

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