US1869745A - Ironing machine - Google Patents

Description

AugZ, 1932. HILL 1,869,745

IRONING MACHINE I Filed April 6, 1929 4 sheets-sheet 1 v 18 51g .1.. Ma wo E9 .54/ INVENTOR [:Zrman 72 HZZZ ATTORN Y5.

Aug. 2, 1932. 7 1,869,745

IRONING MACHINE Filed April 6, 1929 4 Sheets-Sheet 2 INVENTOR Jgermann Jiz'ZZ ATTOR EY I Aug. 2, 1932. HILL 1,869,745

- momma MACHINE Filed April 6. 1929 4 Sheets-Sheet 3 INVENTOR I flaw/257272 HZZZ ATTORN EY Aug. 2, 1932.- H. HlLL ,7

IRONING MACHINE Filed April 6, 1929 4 Sheets-Sheet 4 INVENTOR fiegmdnn HZZZ AfiORNEYS.

atented Aug. 2, 1932 UNITED STATES PATENT OFFICE HERMAN 1\T HILL, OF DETROIT, MICHIGAN, ASSIGNOR TO SYRACUSE WASHING MACHINE CORPORATION, OF SYRACUSE, NEW YORK, A CORPORATION OF DELAWARE IRONING Application filed April 6,

in design and operation, and economical to produce.

Another object is to provide, in an ironing device of the class described, a new and improved type of actuating mechanism whereby the rotation of the cylinder and the movement of the shoe may be easily'and simply controlled.

Another object is to provide a novel form of automatic control means for a device of the class described.

Another object is to provide an automatic control means for ironing devices which will be compact and of small bulk.

Another object is to provide an automatic ironing device which may be detachably secured to a standard motor driven household device, such as a washing machine.

Another object is to provide a new and novel means for pressing the ironing shoe against the cylinder f an ironing machine.

A further object is to provide a novel form of ironin shoe support control mechanism.

The above being among the objects of the present invention, the same consists in certain novel features of construction and combinations of parts to be hereinafter described with reference to the accompanying drawings and then claimed, having the above and other objects in View.

In the accompanying drawings which show a suitable embodiment of the present invention, and in which like numerals refer to like parts throughout the several difl'erent views:

Fig. l is a fragmentary side elevation of a power driven washing machine on which a suitable embodiment of the present inven- -"tion is shown as being-detachably mounted.

Fig. 2 is a horizontal section taken through the control head of the device sh0wn 1n Fig. 1, as on the line 22of Fig. 5.

MACHINE 1829. Serial No. 352,978.

Fig. 3 is a vertical sectional view taken through the control head as shown on the line 33 of Fig. 5. Fig. 4 is a more or less diagrammatic view llustrating the relation of the shoe operating cam in the control head with respect to the shoe.-

Fig. 5 is a vertical sectional view'taken transversely through the control head as on the line 5-5 of Fin. 3.

Fig. 6 is a plan view of the shoe controlling cam and the clutch controlling cam in opera ative relationship with respect to each other and illustrating in dotted lines the extent of movement of the clutch engaging cam.

Fig. 7 is a more or less fragmentary view of the roll or cylinder clutch, together with the cam which controls its action.

Fig. 8 is a side view taken as on the line 88 of Fig. 1 showing. the construction and operation of the shoe supporting means.

Fig. 9 is a view of Fig. 8 taken from the right in Fig. 8.

Fi 10 is a face view of the perforated clutch member emploved for driving the shoe controlling cam.

The present invention, as above pointed out, relates to that type of ironing machines employing a cylinder or roll for supporting clothes, or other articles hereinafter referred to as clothes, for operation upon them by a segmental heated shoe for the purpose of ironing the clothes. I

While in the drawings and in the following description the present device is shown in the form of an accessory which may b'e'applied to a washing machine, or like object, for

the purpose of deriving. its power from the suitable for such use; In this type of ironing machine, it is desirable that the operation of the shoe be automatically control ed, and in this operation, it is desirable that the application of the shoe to the roll beautomatic in that whenever the roll is stopped in its rotary movement, the shoe will recede from it in order that an excessive application of heat to the articles being ironed will be avoided. It is also desirable in these machines that they be capable of being stopped at suitable intervals in their rotation of the roll, or that continuous rotation of the roll be possible, and that the means for controlling such operation of the roll be simple and easily controlled at will. Accordingly, I have provided, as indicated in the accompanying drawings, a new and novel mechanism, simple and compact in design, by which all of these desirable features are possible.

Referring to the accompanying drawings, and particularly to Fig. 1, I illustrate a suitable embodiment of the present invention in connection with a washing machine having a tub portion such as 25. Many of the conventional types of power driven washers are provided with a supporting member such as 26 upon which is supported and which is driven by the electric motor (not shown) provided for driving the movable elements of the washing machine, a wringer (not shown). These wringers are made so as to be easily detached, and the present invention is shown in a form such that when such wringers are detached from the support 26, the present device may be inserted in its place and driven by the washing machine motor, without the necessity of further power means. The embodiment of the present invention, as viewed in Fig. 1, comprises essentially a control head indicated generally in Fig. 1 as 27, a supporting cylinder or roll 28 for the work, and an ironing shoe 29, together with a support indicated generally in Fig. 1 as 30 through which the device is supported from the member 26 and through which the power is transmitted to the control head 27.

Referring now to Figs. 2, 3 and 5, the control head is shown as comprising-a cast housing 31 provided with a cover 32 at one end thereof secured to the housing 31 by screws such as 33 or other suitable means. The opposite end of the housing 31 is provided with a central boss-like horizontally extending extension 34 in which is secured and supported the'tubular member 35 which supports and upon which is rotatably mounted the cylinder or roll 28 which is provided with the usual padded covering)37. The bottom of the housing 31 is closed y the cast member 38 which, as illustrated in Fig. 5, is in turn sleeved upon and secured to the supporting member 39, which is adapted to be received in the member 26 of the washing machine. The member 39 is provided with a flange 40 (see Fig. 5) adapted to rest against the upper end of the member 26 and carries a conventional form of lock member 41, which cooperates with a relative rotation with respect to the member 26. Rotatably supported within the members 38 and 39 is a short drive shaft 42, the lower end of which is slotted for drivingly engaging a pin suchas 43 carried by the upper end of the drive shaft 44 within the member 26.

Within the housing 31 is a horizontally extending shaft 45 supported by suitable bearings 46 at one end of the housing 31, and by a suitable bearing 47 carried by the cap 32 at the other end. The shaft 45 extends through the tubular roll supporting member 35 and is non-rotatably secured to the outer end of the roll 36 by any suitable means (not shown) so as to drive it in unison therewith. N on-rotatably mounted on the shaft 45, as best shown in Fig. 3, is a sleeve 51 which bears against the bearing 46 at one end and terminates in spaced relationship with respect to the cap 32. Rotatably supported on the sleeve 51 is a cam member 52, the left hand the bearing 46 and is maintained in such position as will presently be described. To the right of the cam member'52 a second cam member 53 is rotatably and slidably mounted on the sleeve 51. At the right hand end of the sleeve 51 a gear member 54 is rotatably mounted on the shaft 45. The gear member 54 is in constant mesh with a pinion 55 supported on the shaft 56 which is suitably supported in the bearings 57 and 58 carried by the housing 31. N on-rotatably secured to the left hand end of the shaft 56 is a bevel gear 59 which lies in mesh with the bevel pinion 60 non-rotatably secured to the upper end of the shaft 42. The gear member 54 is thus adapted forconstant driving movement from the shaft 42; Secured to the left hand face of the hub of the ear member 54 by screws such as 61, or 0t er suitable means, is a clutch member shown in face view in Fig. 10. This member 62 which is of disc-like formation, is provided with a plurality of openings 63 disposed in a circular path and at Zqual distances from the center of the shaft The cam member 53 is provided with one or more axially extending pins 64 positioned therein and at equaldistance from the center of the shaft 45 as the openings 63 in the bers 52 and 53 together for equal rotation.

The right hand end of the pins 64 are adapted for engagement with the openings 63 in the disc .62 and this engagement is controlled in a manner that will be presently described. It will be apparent that when the pins 64 are engaged in the openings 63 in the disc 62, both of the cams 52 and 53 are driven in accordance with the rate of rotation of the gear member 54, and that when the pins 64' are free of the disc 62, no driving engagement exists between the gear member 54 and the cams 52 and 53. This engagement is controlled in the following manner:

As shown best in Fig. 6, the periphery of the cam member 53 is axially extended and is formed to provide a plurality of axially acting cam surfaces 66. The number of these cam surfaces 66 is shown in the drawings as four, although this number may be varied in accordance with the desires of the individual designer or the dimensions of other parts of the machine itself, four being considered sufiicient in this case to obtain all the desired movements dependent upon this member. Secured to the outer face of the housing 31 in approximate radial alignment with the cam 53 by screws such as 70, is a small housing 71. A plunger member 72 extending radially of the shaft 45 is slidably supported between the reduced portion 73 of the housing 71, and the housing 31, and is constantly urged toward the shaft 45 by means of the coil spring 74. Its inward movement is limited as indicated in Fig. 5 by a trip lever 75 which projects through the side of the housing 71 and is pivotally supported therein as at 76 (see Fig. 5). The inner end of the lever 7 5 is split and is engaged around the plunger 72, and the plunger 72 is provided with a cross pin 77 which bears against the upper surface of the inner end of the arm 75, which in turn bears against the upper face of the housing 31, and thereby limits the extent to which the plunger 72 may move inwardly. Furthermore, it will be apparent that if the outer end of the arm 75 is pressed downwardly, the inner end of the arm hearing against the pin 77 will cause the plunger 72 to be raised against the pressure of the spring 74.

As indicated best in Figs. 3 and 5, the

lower end of the plunger 72 is provided with a head 78, which, when the plunger 72 is in its lowermost position, lies in the plane of the peripheral edge of the cam member 53. A coil spring 79 surrounding the adjacent hub portions of the cams 52 and 53 and held under compression between such cams, constantly urges the cam 53 to the right so as to force the uppermost cam surface 66 into contact with the plunger head 78, which thereby limits the movement of the cam 53 to the right. The cam surfaces 66 lie along a somewhat spiral path and when the rotatable position of the cam 53 is such that the head 78 of the plunger 72 rests against one end of any cam surface 66, the spring 79 may move the cam 53 to the right, as'viewed in Figs. 2 and 3, a suflicient amount to permit operative engagement of the pins 64 in the openings 63 of the perforated disc 62. It will be apparent that when this operative engagement is accomplished, the cams 52 and 53 have been withdrawn from the disc 62, thus unclutchingthe cams 52 and 53 from the driving gear 54.

The cam 53 between each cam surface 66 is provided with an axially extending projecting portion 81 which effectually prevents further rotation of the cam 53 while the plunger 72 remains in its lowermost position. It will be apparent, however, that if the outer end of the arm 75 is pressed downwardly with the finger, the plunger 72 will be lifted until its head is raised out of contact with the cam 53, thus removing the resistance to movement of the cam 53 to the right which immediately occurs under the force of the spring 79, and the pins 64 are thus again projected into the openings 63 in the disc 62, and the cams 52 and 53 are again clutched to the drive gear 54. If the pressure on the end of the arm 75 is maintained, it will be apparent that the cams 52 and 53 will continue to rotate with the gear 54, but that if the pressure on the arm 75 is relieved the spring 74 will immediately project the head 78 into a position to again engage the then uppermost cam surfaces 66 so that when it has reached the end of such cam surface the cams 52 and 53 will again become disengaged from the drive gear 54 and will remain in disengaged position until the plunger 72 isagain raised.

The purpose of providing this cam movement will now be explained: The cam 52 is of the bi-lobed type with the lobes positioned diametrically opposite to each other. In other words, referring to Fig. 4, the cam 52 is provided with two high areas 84 and two low areas 85, the high areas 84 being provided with a slight central dip 86 and the low areas with a slight central dip 87, fora purpose which will be presently described. An arm 88 is pivotally connected by the pin 89 between a pair of ears 90 formed on the interior of the housing 31, and the free end of this arm 88 carries a roller 91 rotatably secured thereto by means of a pin such as 92. A. pair of links 93 are pivotally connected at one end to the free end of the arm 88 through the pin 92 and are pivotally connected through the pin 94 at their opposite ends to the free end of an arm 95 which is nonrotatably secured to the end ofa square shaft 96. As best shown in Fig. 2, the shaft 96 is provided with an encircling bushing 97 which is rotatably received in a tube 98 non-rotatably secured in the bossed extension 99 of the housing 31. The tube 98 extends to approx imately midway the length of the roll 25 where it is provided with a bushing 103 (see Fig. 8) similar to the bushing 97, for supporting the outer end of the shaft 96 and the shoe 29,as will hereinafter be explained. The arm 95 is provided with a laterally projecting pin 100 between which and a pin 101 on the housing 31 (see Fig. 5) extends a coil spring 102 held under tension. The spring 102 acting through the arm 95 and links 93, maintains the roller 91 constantly in contact with the cam 52, and the arm 88 serves more or less simply as a support and guide for the roller 91 in its movement towards and away from the center of the shaft 45. It will thus be apparent that as the cam 52 rotates, the roller 91 iscaused to travel towards and away from the center of the shaft 45, and through this movement, transmitted to the arm 95 through the links 93, oscillates the shaft 96, and inasmuch as the shoe 29 is carried by the outer end of the square shaft 96, the shoe 29 is likewise caused to approach toward or recede from the roll 28. It will thus be apparent that if the outer end of the arm 75 is pressed down with the finger to hold the plunger 72 out of engagement with the cam surfaces 66 on the cam 53, the cam 52 will be constantly driven and the shoe 29 will continuously approach towards and recede from the roll 28.

The cam surfaces 66 on the cam 53 are so positioned in relation to the depressed portions 86 and 87 of the cam 52 that the head 78 of the plunger 72 engages one of the projecting portions 81 of the cam 53 each time the roller 91 drops into one of the depressions 86-87. Nhen the roller 91 is in engagement with one of the depressions 87 the shaft 96 has been oscillated to move the shoe 29 out of engagement with the roll 28, and when the roller 91 is in engagement with either of the depressions 86 the shoe 29 has been moved against the roller 28. Consequently, if the plunger 78 is allowed to remain in contact with one of the projections 81 which stop the roller 91 in one of the depressions 86,

and the roll 28 is rotating, a continuous ironing operation is effected; while if the head 78 is allowed to remain in contact with one of the projections 81 which maintain the roller 91 in engagement with one of the depressions 87, the shoe 29 is maintained out of contact with the roll 28, and either of these conditions may be controlled through the arm 75 by selecting the particular pro ection 81 that the head 78 is allowed to remain in engagement with. Furthermore, it will be apparent that if the-plunger 72 is held in raised position by the arm 75, the shoe 29 will be continuously oscillated to and from the roll 28.

The depressions 86 and 87 are provided in the cam 52 in order to insure the shoe 29 being held in contact or out of contact with the roll 28, as the case may be. The roller 91, whose position radially of the shaft 45 controls the position of the shoe as above described, in being urged towards the shaft 45 by the spring 102, drops into these depressions and is thereby resiliently urged to maintain its position therein. Furthermore, the resilient pressure of the roll 91 on the cam 52 tends, when entering engagement with any one of the depressions 86-87 to rotate the cam 52 until the roll is in full engagement with any such depression, thereby aiding the cam 53 in stopping the cam 52 at such position that the shoe 29 is either in full contact or fully out of contact with the roll 28. In fact, by the use of the depressions 86-87 the projections or lugs 81 on the cam 53 may be dispensed with altogether, and it is to be understood that they are not at all essential to the proper working of the device.

The depressions 86-87 have also another important function in this device. It is well understood in the art that where a driven member is clutched to a driving member through a form of dog clutch, such as is the case of the cam member 53 and gear member 54, and automatic means are employed for disengaging the clutch parts, such as the head 78 of the pin 72, in the present case, bearing on the various cam surfaces 66 to pull the pins 64 out of the openings 63 in the disc 62, some means must be provided to impart to the driven member an added movement upon disengagement of the clutch members in order to insure suflicient separation of the clutch members to prevent subsequent rubbing or other contact between them. In other words, and taking the present construction as an example, if the cam member 53 stopped rotation the moment the pins 64 were pulled out of the openings 63, the ends of the pins 64 would still remain in such close relation to the disc 62 that they would rub against it, not only fostering wear of the parts but also inducing an annoying click each time the ends of the pins passed the openings 63.

The depressions 86-87 and the spring pressed roller 91 cooperate to eliminate this condition in the present construction by insuring a material separation of the ends of the pins 64 from the disc 62 upon disengagement of the pins 64 from the openings 63, and this for the following reasons. The cam surfaces 66 on the cam member 53 are so arranged that at the moment the pins 64 are disengaged from the openings 63 in the disc 62 the roller 91 is entering, but is not fully engaged, with one of the depressions 86-87. The pressure of the spring 102, in urging the roller 91 into the depression 86-87, tends to rotate the cam 52 in advance of the driving means, which not only releases the driving pressure between the pins 64 and the sides of the openings 63 to allow an easier withdrawal of the pins 64, but also causes neeavea a partial rotation of the cam 52 upon withdrawal of the pins 61 from the openings 63. This partial rotation, because of the relation between the head 78 of the pin 72 and the cam surface 66 with which the head 78is then in contact, imparts an added axial movement to the cam member 58 which thus carries the ends of the pins 64 away from the disc 62 a suficient amount to avoid subsequent inadvertent rubbing between them.

It has been previously described that it is undesirable that it be possible to permit the shoe 29 to remain in contact with the roll 28 if the roll 28 is not rotating, for the reason that in such a case the articles being ironed might be scorched or burned. The driving means for the roll 28 is constructed to provide for this, and is as follows:

The right hand side of the gear 54:, as

viewed in the figures, is provided with an annular flange portion 106, the edge of which is formed with axially exposed ratchet teeth 107. A discalike clutch member 108 is mounted on the right hand end of the shaft 15 so as to be axially slidable thereon but is maintained against relative rotation by means of a key 109 (see Fig. 3) The clutch member 108 is provided with a series of teeth 110 adapted for engagement with the teeth 80 107 when the clutch member 108 is moved axially to the left. A coil spring 11]. en-

circling the hub of the clutch member 108 and maintained under compression between the clutch member 108 and the washer 112,

constantly urges the clutch member 108- to wards the left so as to engage the teeth 110 with the teeth 107 The axial position of the clutch member 108 on the-shaft 15 is controlled in the following manner:

The clutch member 108 is provided with a peripheral flange 113, and bearing against the left hand side of the flange 113 is a yoke member 114 which, as best shown in Fig. 7, is carried by and is secured against axial movement on the horizontally extending pin 115 which is suitably guided and supported in the lugs 116 formed on the interior of the housing 31. The yoke 114 and pin 115 are constantly urged to the left with the clutch member 108 by the coil spring 111. -The left hand end of the pm 115 terminates adjacent to the arm 88. The arm 88 is provided with a member 117 secured thereto by means of the pin 118. The member 117 during oscillation of the arm 88, sweeps past the left hand end of the pin 115, and is provided with an inclined cam surface 119 which, as the arm 88 follows the roller 91 as the latter engages either of the depressions 87, engages the left hand end of the pin 115 andforces it to the right as indicated in Fig. 7 a suflicient amount to disengage the teeth 110 from the teeth 107. This disengagement of the teeth 107 and 11 0, of course, disconnects the shaft from the 65 gear 55, whereupon rotation of. the roll 28 is stopped. In such a case if the cam 52 continues to rotate, the arm 88 in moving away from the shaft 45 with the roller 91 will "move the inclined surface 119 out of engagement with the pin 115 and allow the spring 111 to again move the teeth 110 into operative engagement with the teeth 10?, again locking the shaft 15 and roll 28 to the gear 55 for equal rotation with the latter. From this it will be apparent that whenever the roller 91 is engaging the end portions 86 of the cam 52, at which time the shoe 29 bears against the roll 28, the roll 28 will be clutched to turn with the gear 55 which is constantly driven, and when the roller 91 is in engagement with the portions 87 of the cam 52, the roller 28 is unclutched from the gear 55, and this is the only position of the cam 52, and consequently the shoe 29, that ermits the roll 28 to be stationary while t e. gear 55 is being driven.

T have, then, as so far described, a construction in which, by suitable manipulation of the trigger 75, permits a continuous rotation of the roll 28 with the shoe 29 in engagement with it; which permits a partial turn of the roll 28 and subsequent withdrawal of the shoe 29 from engagement therewith; or which permits an intermittent rotation of the roll 28 with a corresponding intermittent engagement of the shoe 29 therewith, and in which it is possible when the machine is operated, to bring the shoe 29 into engagement with the roll 28 only when the roll 28 is rotating.

However, it may sometimes be desirable to move the shoe into contact with the roll when the machine is operating but the roll is not rotating. Such a case may occur when it is desired to press an article, such as a, pair of trousers. l have therefore provided means to permit this condition.

Referring to Fig. 2, it will be noted that a pin 146 is rotatably mounted in the cover 32 in parallel relationship with respect to the shaft 15 and slightly beyond the periphery of the flange 113 of the member 108. The pin-146 is provided with a handle portion 147 on the exterior of the cover 32 and with an ofi-set head portion 148 on the interior of the casing 31. The head 148 lies slightly to the left of the flange 113 when the teeth 107 and 110 of the roll clutch are in completely disengaged relationship, and the head 148 is so formed that if the pin 146 is then turned by the hande 147 the head 148 will be projected inwardly of the periphery of the flange 113 so that when the clutch member 108 is again permitted by the cam surface 119 to be moved tothe left under the influence (of the spring 111, the head 148 will engage the flange 113 and will prevent engagement of the teeth 107 I and 110, and consequently will prevent rot-ation of the roll-28. In such a case the move-- ments-of the remaining elementspf the device .gage the same.

continue undisturbed, and the shoe 29 may be moved into contact with the roll 28 although the roll 28 is not then rotating.

The novel supporting means for the shoe 29 will now be described:

Referring to Figs. 1, 4, 8 and 9, and particularly to Figs. 8 and 9, the free end of the square shaft 96, which terminates substan tially at the center of the roll 28, has nonrotatably secured thereto immediately beyond the corresponding end of the tube 98, a short bell crank member 123. To the upper arm of the bell crank member 123 and positioned on either side thereof, a pair of links 124, also in the form of a bell crank, are pivotally secured by means of the pin 125. The upper ends of the links 124 are secured together in spaced relationship by means of a pin 126. The horizontally extending arm of the bell crank 123 is provided with an enlarged axially parallel opening 127 in which a pin 128 is rotatably received, the pin 128 having eccentric pin portions 129 projecting axially therefrom. A pair of links 130 disposed on either side of the bell crank 123 are ivotally mounted at their lower ends on tlie pins 129. The links 130 are connected together at their upper end by a pin 131 which serves as a handle adapted to be grasped by the fingers. The horizontally extending. arm portions 132 of the links 124 are connected together in spaced relationship by means of a pin 133. The links 130 are each provided with a curved slot 134 in which the pin 133 is adapted to be received when the shoe 29 is in operative positon. The shoe 29, which is supported from the pin 126, as will hereinafter be described in detail, is thus maintained in its operative position through engagement of the pin 133 with'the slots 134. The slot 134, particularly on its lower surface, is shaped for a camlike action on the pin 133 so that as the pin 133 is moved relative to the slot 134 towards the blind end of the same, the pin 133 is forced away from the axis of the pins 129, thus tending to force the links 124 in a counterclockwise direction,'as viewed in Fig. 8, which thus forces the shoe 29 into more firm contact with the roll 28 when in position to en- If, in such a case, the shoe 29 is not pressed against the roll 28 as firmly as desired, the pin 128 may be rotated in the opening 127, as by inserting a screw driver in the slot 135, so as to bring the axes of the pin portions 129 to a relatively higher position. The pin 128 may be locked in any such position by means of the set screw 136. When it is desired to move the shoe 29 entirely out of operative engagement with the roll 28, the links 130 may be swung back as to the position indicated by dotted lines in Fig.

8, the pin 133 thus being readily moved out of engagement with the slots 134, which then permits the links 124 to pivot in a clockwise direction about the pin 125 and to carry the the pin 126 to be inserted in a radial direction into the collar 138. A removable screw 140 is provided for bridging the slot 139 so as to prevent inadvertent disengagement of the pin 126 and bracket 137. By removing the screw 140, it will be apparent that the shoe 29 may be lifted vertically off of the pin 126 and therefore free of the machine. A handle 141 secured to the shoe 29 by a pair of arms 142 is provided for aiding in removing the shoe 29. The fit between the collar 138 and the pin 126 is preferably sloppy, this type of fit being provided in order to permitthe shoe 29 to shift its relatively parallel position with respect to the axis of the roll 28, in order to accommodate itself should the article being ironed be of greater thickness at one end of the roller than at the other end thereof. It may, of course, adjust itself about the axis of the pin 126 to insure proper fit with the roll 28 in the opposite direction.

To aid in moving the shoe 29 away from the roll 28 when the links 130 have been moved to release the pin 133 from the slots 134, a fiat spring 143 (see Fig. 4) is rigidly clamped between the bracket 137 and shoe 29, its lower end bearing against the hub of the bell crank 123 in such a manner as to place it under a stress when the pin 133 is operatively engaged in the slots 134.

The square shaft 96 through which pressure from the cam 52 to the shoe 29 is transmitted, is formed of spring-like material and of such dimensions as to permit a substantial tortional twisting of the same in forcing the shoe 29 against the roll 28, and it is primarily through this twisting of the shaft 96that I obtain the pressure of the shoe 29 against the roll 28 in this construction, and I consider this feature of primary importance' Formal changes may be made in the speeific embodiment of the invention described without departing from the spirit or substance of the broad invention, the scope of which is commensurate with the appended claims.

What I claim is:

1. In an ironing machine, in combination, a roll, a shoe, a constantly driven member, a cam, a roller resiliently pressed against said cam, means connecting said roller and point of greatest distance from said roll, said cam being further provided with a depression in which said roller is engaged when said shoe is moved to substantially its point of greatest pressure against said roll, means for clutching said cam to said constantly driven member, and automatic means for disengaging said clutching means when said roller is engaged with either of said depress sions. I,

2. In an ironing machine, in combination, a roll, a shoe, a constantly driven member, a cam, a roller resiliently pressed against said cam, means connecting said roller and said shoe for causing movement of said shoe in accordance with the position of said roller on said cam, said cam being provided with a depression in which said roller is engaged when said shoe is moved to substantially its point of greatest distance from said roll, said cam being further provided with a depression in which said roller is engaged when said shoe is moved to substantially its point of greatest pressure against said roll, means for clutching said cam to said constantly driven member, means constantly urging the last mentioned means toward engaged position, and automatic means for disengaging said clutching means when said roller is engaged with either of said depressions.

3. In an ironing machine," in combination, a rotatable cam member having high and low portions each of which is provided with a depression therein, a rotatable driving mem ber concentric with said cam member, shiftable means between said cam member and said driving member rotatable with said cam member, means carried by said shiftable means and means carried by said driving member axially cooperable to clutch said shiftable means to said driving member for equal rotation therewith, a plurality of axially operative cam surfaces on said shiftable means, a member yieldably pressed against the periphery of said cam member, and means cooperable with the cam surfaces on said" shiftable member to unclutch saidshiftable member from said driving member upon engagement of said yieldably pressed member with-one of said depressions.

4. In an ironing machine, in combination,

a rotatable'cam member having high and low portions each of which is provided with a depression therein, a rotatable driving member concentric with said cam member, shiftable means between said cam member and said driving member rotatable with said cam member, means carried by said shiftable means and means carried by said driving member axially cooperable to clutch said shiftable means to said driving member for equal rotation therewith, a plurality of axially operative cam surfaces on said shiftable means, a memberyieldably pressed against the periphery of said cam member, and means said shiftable member and shiftable at will out of engagement therewith.

5. In an ironing machine, in combination, an oscillatable shaft, a member fixed thereto, a bell crank'pivoted to said member, a link pivoted to said member, means for supporting an ironing shoe on one arm of said bell crank, and disengageable means on the other arm of said bell crank and on said link for holding said bell crank against movement relative to said member.

6. In an ironing machine, in combination, an oscillatable shaft, a member fixed thereto, a bell crank pivoted to said member, a link pivoted to said member, means for supporting an ironing shoe on one arm of said bell crank, and disengageable means on the other arm of said bell crank and on said link for holding said bell crank against movement relative to said member, said means including a pin and a cooperating cam surface.

7. In an ironing machine, in combination, an oscillatable shaft, a member fixed to oscillate therewith, a bell crank pivoted to said member and provided with means for supporting an ironing shoe from one arm thereof, a link cooperable with the other arm of said bell crank for holding said bell crank against relative swinging movement with respect to said member, and an eccentric pivotal supportfor said link on said member whereby the relative position of said link with respect to said member may be adjustably controlled.

8. In an ironing machine, in combination, an oscillatable shaft, an arm member swingable therewith, a shoe member and interengaging means on said arm member. and said shoe member for supporting said shoe on said arm, said means including a pin carried by one of said members, a split sleeve carried' by the other of said members into which said in is radially movable, and removable means blocking the split of said sleeve to prevent inadvertent disengagement of said pin and sleeve.

fHE-RMANN HILL.

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