US2568514A - Ironing head drive - Google Patents

Description

Sept. 18, 1951 C. C. SCHEELE IRONING HEAD DRIVE Filed Feb. 24, 1948 TT RNE Y SePt- 18, 1951 c. c. SCHEELE 2,568,514

IRONING HEAD DRIVE Filed Feb. 24, 1948 3 SheecS-Sheerl 2 134 /ISQ i38 INVENTDR CHARLES E. SCHEELE .T TRNEY' Sept. 18, 1951 Filed Feb. 24, 1948 c. c. scHEELE 2,568,514

IRONING HEAD DRIVE 3 Sheets-Sheet 3 bvs/EN T01? EHARLBS E. SCHEBLE 'TT UHNEY www Patented Sept. 18, 1951 UNITED vSTATES PATENT oFFicE IRONING HEAD DRIVE Charles C. Scheele, Syracuse, N. Y., assigner to Easy Washing Machine Corporation, Syracuse, N. Y., a corporation of Delaware Application February 24, 1948, Serial No. 10,501

(Cl. i4- 48) 2 Claims. 1

This invention relates to ironing machines, and more particularly to transmissions for driving the roll and ironing head of such machines.

In ironing machines of the type described, it is desirable to drive the roll at diierent selectable speeds for ironing different types of fabrics. It is desirable also to vary the speed of the roll without necessarily varying the rapid approach and retrograde motion of the ironing head into and out of engagement with the roll.

The present invention has as an object the provision of a plurality of speeds for the roll driving mechanisms, which may be selected at will.

A further object of the invention is the provision of simplied means to at will stop the roll rotation or cause the roll to ratate at one of two speeds.

A further object of the invention is to provide apparatus of the type described in which the roll speed may be varied without altering th'e speed of operation of the head toward and away from the roll,

A further object of the invention is to provide in apparatus of the type described, an improved clutch for controlling the movement of the head toward and away from the roll.

A still further object is to provide mechanism for the purpose described of relative simplicity and low manufacturing cost.

The above and other novel features of the invention will appear more fully hereinafter from the following detailed description when taken in conjunction with the `accompanying drawings. It is expressly understood, however, that the drawings are employed for purposes oi.' illustration only and are not designed as a dennition of the limits of the invention, reference being had for this purpose to the appended claims.

In the drawings, wherein like reference characters indicate like parts:

Figure 1 is an end elevation of the transmission with the casing cut away;

Figure 2 is an enlarged longitudinal section taken substantially on the line 2 2 of Figure 1;

Figure 3 is a longitudinal section taken substantially on the line 3 3 of Figure 1;

Figure 4 is a transverse section detail taken substantially on the line 4-4 of Figure 3;

Figure 5 is a sectional detail taken substaf tially on the line 5--5 of Figure 4;

Figure 6 is a transverse section ofthe detent of Figure 4, taken substantially on the line 6-6;

Figure 7 is a transverse section taken substantially on the line 1-1 of Figure 2; and

Figure 8 is a sectional detail taken substantially on the line 8 8 of Figure 7.

Referring to the drawings, and more particularly to Figures 1, 2 and 3, there is shown a transmission for driving the usual ironing roll I0 in the direction of the arrow A and for moving the ironing head or shoe l2 from engagement with the roll l0 as shown, to a position spaced therefrom and to the right of the position shown in Figure 1. The ironing roll is driven from the shaft I4 by means of a pinion I6 engaging an internal gear. I8 concentric with and within the cylinder shell`28 of the roll It. The movement of the head toward and away from the roll is effected through the rock shaft 22, head supporting arm 24, and the bifurcated lever 26 riding upon an eccentric 28. Both the roll, the shaft I4 and the rock shaft 22 are journaled in the back wall 3l) of the gear casing 32, the construction being in many respects similar to that shown in Ringer Patent No. 2,083,505, issued June 8, 193'?.

Power is applied to aperate the roll and head from a vertically disposed shaft 34, suitably connected to a small electric motor or the like which operates at substantially constant speed, the shaft having a driving worm 3B. An axially movable shaft S8, to which the eccentric 23 is splined, carries thereon a worm wheel 48 meshing with the worm 36 and is thereby adapted to continuously rotate at a substantiallyI constant speed. A resilient spacing washer 43 arranged between the eccentric 28 and the worm wheel 4i) provides an axial thrust upon these parts to cause them to position themselves against the front and back casing walls in the manner shown. The worm wheel 48 is freely rotatable upon the shaft 38 and is provided with a peripherally notched clutch disk 42 at one end for driving the ironing head eccentric 28, and dog teeth of a saw tooth shape 44 upon its opposite end for driving the roll I0.

The eccentric 28 has integrally formed therewith a radially extending ear 48 having a boss 48 upon which is pivoted a rocking actuating lever 50, the latter cooperating with a radially slidable clutch tooth 52 sliding in guides 54 and 5B and adapted to be moved to engagement with the notches 58 of the peripherally notched clutch disk 42. The lever 5D is biased by a spring G0 to move in a clockwise direction relative to the ear 46, and thereby to normally urge the sliding tooth 52 into a notch 58 of the clutch disk 42, it appearing that the lever 50 is positioned within a notched recess 62 in the face of the tooth 52. A manually` operable stop 64, which may be swung into the path of the end surface 66 of the lever 58 or the opposite extremity 58 of the same lever, rocks the lever 58 into the position shown in Figure 7 to radially withdraw the tooth 52 from the disk 42 to thereby disconnect the eccentric from further rotation with the constantly rotating worm wheel 48. In order to cause the release movement of the tooth 52 from a notch 58 of the clutch disk 42, there is provided in a recess 10 in the outer end of the tooth 52, a coil spring 12 and plunger |4, the latter` bearing against the lever I). Thus, upon disengagement of the tooth 52 by movement of the lever 50 resulting from engaging the stop 64, the spring 'I2 is rst compressed until the frictional engagement of the tooth with the side -walls of the notch 58 is broken, whereupon a snap release action is effected. It will thus be seen that by reason of the arms 66 and 68, rotation of the eccentric may be effected through 180 to either bring the ironing shoe I2 into engagement with the roll or to move it away from the roll to provide the usual clearance. 'Ihe movement of the arm 26 is biased in a counterclockwise direction by the spring 21 to prevent chattering.

In order to coordinate the starting and stopping of the roll I0 in its rotation, with the movement of the ironing head toward and away from the roll, the eccentric 28 is slidingly keyed to the shaft 38 through the key 16, and the end 'I3 of such key forms a cam follower and rides against a face cam 30 formed on the end of the sleeve 82 xed within the forward wall 84 of the housing.Y Thus, upon rotation from the position shown in Figures 1 and 2 of the eccentric through an angle of 180, the shaft 38 is moved to the left against the urge of the biasing spring 86 contained within the hollow end of the shaft and bearing against the housing back 30. Freely rotatable upon the shaft 38 but constrained to move axially therewith by ring collars 88 and 90 is a step gear 92 having complemental saw tooth shaped dog teeth clutch elements 94 on the right hand face thereof adapted-to cooperate with the teeth44 on the face of the worm wheel 40. It will thus be seen that the clutch formed by the teeth 44 and 94 is engaged in the position'shown in Figure 2 and released upon movement'of the shaft 38 to the left in response to the action of the cam Si) and key follower 18.

The step gear 92 meshes with freely rotatable mating gears 96 and 98- mounted upon the-shaft Y I4, and the teeth thereof are of sufficient breadth rto permit the gliding movement without disengagement. Each of the mating gears are provided with saw tooth shape clutch teeth |00 and |02 on their adjacent faces, and-are adapted to be engaged by similar teeth |94 and |06 upon the axially sliding clutch collar |03V splined to the collar I I 0, which is in turn keyed to the shaft I4. The clutch collar |08 is provided with an annular actuating groove I I2 embraced by a sliding yoke II 4 slidably positioned upon. the stationary pin IIE, which may. act as a limit for the manual stop 64. In the forward housing wall IIS of the casing 32 (see Figure 4) there is positioned a manually operated stub shaft |20 having a crank |22 and a sliding block |24 riding in a transverse channel |26 in the sleeve portion |28 of the yoke I I4.

The stub shaft |29 is enlarged in diameter as vat |30 to form a collar engaging the side wall I I8 and the portion so enlarged is notched in its cylindrical face as at |32, |34 and |36, to cooperate with a spring pressed detent iaslidingly received in a bore |40 in the side wall IIS. The notches 32, |34 and |36` cooperate with the detent I 38 to provide for movement of the stub shaft I 20 to one of three positions, the central position of which places the yoke H4 in the position shown in Figure 3, where its clutch teeth |04 and |06 are out of engagement with the clutch teeth |02 and IBD of the gears 95 and 9S. Movement of the stub shaft |20 to either end position as determined by the notches |32 and |36, positions the clutch collar |08 to the right or to the left to engage the respective pairs of clutch teeth so as to complete a drive from the step gear 92 to one or the other of the gears 96 or 93 and thus to the roll 20. By the arrangement thus shown, the roll may be driven at either of two selected speeds at will or may be held in a stationary position should it be desirable to move the head into and out of engagement with the roll stationary for special pressing operations. It will also appear that the two speed arrangement is such as to provide a change of speed in the roll operation without slowing down the rapid movement of the ironing head into engagement with the roll or away therefrom. By the provision for an intermediate position of the control with both gear clutches disengaged, a separate clutch, or means to actuate the clutch formed by teeth 94 and '44 independent of the cam S0 and key follower 18 are rendered unnecessary to secure operation of the head with the roll stationary.

While a single embodiment of the invention has been illustrated and described, it is to' be understood that the invention is not limited thereto. As various changes in construction, selection 'and arrangement ofthe parts may be made without departing from the spirit of the invention, as will be apparent to those skilled in the art, reference will be had to the appended claims for a definition of the limits of the invention.

What is claimed is:`

l. In an ironing machine transmission. a casing, a shaft slidably mounted therein, a driven shaft mounted therein in parallel spaced) rela- Y tion to said slidably mounted shaft, a main drive member on said slidable shaft having clutch teeth on one face, an ironing headV operating eccentric on said shaft adjacent the other face of said drive member, means for axially moving said shaft in response t0 rotation of said eccentric, step gear means on said axially slidable shaft and movable axially therewith, and having face teeth adapted to engage or disengage said member face teeth upon axial movement of said shaft, gears meshing therewith on said driven shaft, a clutch device for connecting said eccentric to said drive member having a control lever, a manually movable abutment Vadapted to be positioned in and out of the path of `said control lever, a casing supported stop extending parallel with said shafts tolimit movement of said abutment, means for selectively coupling any one of said meshing gears to said driven shaft, and shifting means therefor, slidably mounted upon said casing supported stop.V Y

2. An ironing machine transmission as set forth in claim l, in which the shifting means has an eccentric receiving guideway and there is provided eccentric means cooperating with said guideway and journaled in the casing wall on an axis substantially transverse tothe shafts.

CHARLES C. SCI-IEELE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED sTATEs PATENTS Number Name Date 1,568,166 Kirby Jan. 5, 1926 1,670,742 Richards May 22, 1928 2,056,666 Geldhof Oct. 6, 1936 2,136,541 Carson Nov. 1.5, 1938 2.193.533V Parish Mar. 12. 1940

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