US2435270A - Valved-cylinder type motor - Google Patents

Description

Feb. 3,1948. L. H. CUSHMAN 2,435,270 a VALVED-CYLINDER TYPE MOTOR Original Filed May 26, 1943 s Shets-Sheet 1 fl 2 "1 3 k yg 1' 0 L1 7 g g .1 5g EFR s W"% F o H E Z" Q o L w 5;; o 8% 3 7 1 T v (2 x N 0 oz q) L '7 a 3 Rventor zeeHcush mdn By his Attorney Feb.3, 194 8. H sWw Z 2,435,270

VALVED-CYLINDER TYPE MOTOR Original Fileii May 26', 1945 l 3 Sheets-Sheet 2 l nz/enzdr Zee H Cuwhman hiofIiim-n 615 Feb. 3, 1948. I H1 cusHMAN 2,435,270

VALVED-CYLINDER TYPE MOTOR Origingl Filed May 26, 1945 5' Sheets-Sheet 3 Invent 0 r 8 L ee H Cuahman m u By W Patented Feb. 3, 1 948 YALVEDeOYLINDER TYPE MOTOR Lee 'H. Cushman, South Hamilton, Mass, as-

;signor to United Shoe Machinery Corporation, Flemington, .N. J., a corporation of New Jersey Original application May 26, 1943, Serial No.

488,608, .now Patent her 9, 1945.

No. Divided and this application 2,386,383, dated Octo- August '3, 1944, Serial No. 547,943

.3 Claims.

This invention relates to controlling mechanisms, and particularly to those which combine with motor mechanism, in .a .unitary structure, valve mechanism by which said motor mechanism is governed. It is herein disclosed as utilized for the production of a predetermined movement of a machine-element, as :a gage in a shoe-machine, such as that disclosed in Letters Patent of the United States No. 1,118,484, Fowler. November 24, 19.14.

.An object of myinvention is to :produce movement of the above character by simple, compact and positively acting fluid-pressure mechanism. This mechanism includes a .casing having inletand outlet-ports arranged at difierent points longitudinally of the casing, said inletand outlet-ports alternating in their longitudinal arrangement,;and a sleeve movable within the casing and provided with :a plurality of sets of openings, each setbeing individual to one of the ports with its openings movable into successive registration with such port in the rotation of the sleeve, and a piston reclprocable within the sleeve. The sleeve and piston furnish a servomotor, and the sleeve and casing :a valve, said sleeve preferably being common to the valve and motor. More specifically, the sleeve is rotatable through 360, the registration of the sleeve-openings with the casing-ports applying pressure to one side of the piston and connecting exhaust to the other side a plurality of times during each rotation of the sleeve. The present mechanism, in its application to a machine controlled, is made the subject of an application filed in my name in the United-States Patent Oiiice .on May .26, 1943, hearing the Serial No. 488,608 and issued as .PatentNo. 2,386,383 on October 9, 1945. Of this, .the present case is a division.

In the accompanying drawings,

Fig. 1 shows in side elevation my improved controllingmechanism as part of a rounding and channeling machine for shoe-soles;

Fig. 2 is a central vertical longitudinal section through the controlling mechanism;

Figs. .3 and .4 are transverse sections on the lines III-.III and IV-IV, respectively, of Fig. 1 for a particular angular position of the valve-sleeve;

Figs. 5 and .6 are similar views on the lines V- -V and VI-VI,r-espective1y. of Fig. 1 for another position of the valve-sleeve;

Figs. '7 and 8 and Figs. 9 and 10 are transverse sections .on the same planes as Figs. .3 and 4 and Figs. .5 aandfi, respectively, for still other positions of the valve-sleeve;

Fig. 11 is a plan view of a shoe-sole with the angles indicated about its periphery, at which changes in the projection of the edge from the upper may occur and also at 10 intermediate points; and 7 Figs. 12, 13, 14 and 15 are diagrams showing the relation between the angular movement of the work, the effective valve-ports and the-valvesleeve-openings, and corresponding, respectively, to the valve-positions appearing in Figs. 3 and 4, Figs. 5 and 6, Figs. '7 and 8 ,and Figs. 9 and 10.

In the machine of the previously mentioned patent, to a jack or shoe-support Ill is'imparted a combined movement of rotation and translation, by mechanism a portion of which is shown at A. This advances the margin of a sole s attached to a jacked shoe S to receive the action of a constantly rotated rounding cutter or knife l2, and that of a channel-knife I4. With the channel-knife is associated a .presser-foot it,

which is moved vertically to throw the knife into and out of action. The path of the sole-margin, as it advances past the operating tools, is more exactly determined by a crease-gage l8 and an upper-gage120. The gage I8 is furnished by a horizontal plate, the reduced outer edge of which is adapted to entert-he crease between the upper and the sole of the shoe, and is mounted for vertical adjustment on a sleeve '22, which :may

. be fixed in-difierent positions upon the machineframe. It is shown as so engaging the cutterhub, that the cutter I2 is adjusted with it. The body of the gage 20 may consist of a bar 24, pivoted at 26 to mechanism to be hereinafter described, it being guided by a slotted connection .28 to the crease-gage so it may share in the vertical adjustment of the latter. At the same time, its rearwardly curved upper-engaging portion 20 may be moved longitudinally into dif- ,ierent relations to the crease-gage.

lIt-may be desired that the sole-edge, as it is rounded :by the cutter 12 shall project different distances from the upper. This variation in the sole-extension may .be obtained by shifting the casing 40, through the wall of which and spaced from each other longitudinally are inlet- ports 42 and 44, lying in the ame vertical plane longitudinally of the casing and supplied with fluid under pressure, preferably oil, through pipes 45 and 48, respectively. Alternating with the ports 42 and 44, and separated from these by 90 about the casing, are outlet- ports 50 and 52, to which are joined the respective pipes 54 and 56. Fitting within the casing is a valve-sleeve 58, the projecting hub 60 of which is joined by spiral gearing 62', a vertical shaft 64, bevel-gearing 66, a horizontal shaft 68 and bevel-gearing 10 to the camshaft 12 of the machine controlled. The ratio of the gearing is such that the valve-sleeve is rotated through 360 for each operating cycle of the machine, or while the cutter I2 is rounding the entire periphery of the sole .9 of a jacked shoe. In the valve-sleeve are pairs or sets of openings which, in the rotation, successively register with corresponding casing-ports. l4 and 16, which co-operate-with the port 42, are elongated, each occupying about 160 of the circumference of the sleeve. The remaining openings may be of substantially the same area as the ports, the inlet-openings wand 80 corresponding to the port 44, and the outlet-openings 82- and 84 and 86 and 88 to the ports 50 and 52, respectively. Within the sleeve 58 a piston 90 is reciprocable, its rod 92 being guided in the sleeve-hub B and at the opposite end in the head of the casing 40. To a terminal-portion 94 of the rod the upper-gage 20, 24 is pivoted at 26. The movement of the gage toward the work is limited by a nut 96, threaded upon the outer end of the rod 92 and contacting with the outer face of the gear 62 upon the hub 60. In the opposite direction, the engagement of the terminal 94 with the casing-head determines the extent of travel. The piston 90, together with the valve-sleeve 58, furnishes a servo-motor which, governed by the valve 40, 58, will apply power to the upper-gage 20 to hift it in opposite directions, and thereby impart to the sole 3 of a jacked shoe S the desired changes in contour.

For the purposes of this description, the form of the sole may be as previously indicated-a less projection of the edge from the upper at the op- Dosite sides of the shank than at the heel-seat and forepart. Considering, as appears in Fig. 11, the zero point in the rotation of the sole-edge to be at the center of the rear of the sole, which is turning in the direction of the arrow, the narrower projection will be between 80 and 100 and between 260 and 280 of this rotation, with the wider margin from 100 to 260 at the forepart, and from 280 to 80 at the heel-seat. In each of Figs. 12, 13, 14 and 15 is shown diagrammatically the relation between the active ports in the casing 40 and the co-operating openings I in the valve-sleeve 58, the positions to which the piston 90 is carried by the resulting pressure, and the angles in the rotation of the sole. The latter are designated by the line :11, which may be considered as indicating the point of operation of the cutter l2. Each figure is based upon a development of the valve-sleeve, which is divided transversely by line each indicating of rotation of the sole and valve-sleeve. Assume the jack ID to have rotated throuph 280, and that there is to occur the change from the narrower shank to the wider heel-seat-margin. At this time, as appears in Fig. 12 the sleeve-opening 14 'will have arrived at the inlet-port 42 (Fig. 3),

The inlet-openings 4 while the sleeve-opening 82 (Fig. 4) will register with the outlet-port 50 (Figure 4). 011 under pressure will be supplied to the right-hand end of the sleeve 58 (Figs. 1 and 2), which furnishes a cylinder for the piston 90 of the servo-motor, as well as a portion of the valve. This forces the piston forward from the position illustrated in Fig. 15 until it is arrested by the contact of the nut 96 with the gear 62. The work, which has been positioned by the crease-gage I8, is at once carried outwardly by the pressure of the gage 20 against the upper, and the edge of the sole s is shifted in the field of action of the cutter l2, so that a wider rounded margin i left upon the sole. During the succeeding 160 of rotation of the workand 90 of rotation of the valvesleeve, although the outlet-port 50 has been closed by the passing of the valve-sleeve-opening 82, the elongated sleeve-opening 14 will hold the upper-gage firmly out in the desired relation. At 80 in the rotation of the jack beyond the zeropoint (Fig. 13), the sleeve-openings 18 and 86 respectively reach the inlet-port 44 (Fig. 5) and the outlet-port 52' (Fig. 6), the port 42 having been closed by the passing of the sleeve-opening l4. Pressure is applied to the opposite side of the piston 90 to retract the upper-gage until the rod-terminal 94 strikes the casing-head. This so withdraws the gage 20, that the jack mechanism carries the shoe in until-the'crease is seated upon the gage l8, the upper-gage 20 becoming ineffective. A narrow edge results, and no continued fluid-pressure need be exerted at this time to hold the upper-gage in place, the work itself effecting this. 20 more of rotation of the sole having occurred, the elements are as appears in Fig. 14. The arrival of the sleeve-opening T5 at the inlet-port 42 (Fig. 7) and the sleeve-opening 84 at the outlet-port 50 (Fig. 8) creates conditions similar to those of the first period. The resulting pressure upon the piston again urges the gage 20 out to remove the work from the gage l8, and thus widen the sole-edge about the forepart between and 260 of work-rotation. Finally, as may be seen in Fig. 15, the narrowing edge at the shank between 260 and 280 of work-rotation is produced by the withdrawal of the upper-gage by pressure applied to the piston 80 through the inlet-port 44 and sleeve-opening 80 (Fig. 9), and exhaust permitted through the sleeve-opening 88 and the outlet-port 52 (Fig. 10). An operating cycle of the machine has thus been completed. It will be seen that throughout this cycle, the work and the valve-sleeve rotate in synchronism, and that, by a correct location of the ports and co-operating openings for any period of angular movement of the valve-sleeve,

different points longitudinally of the casing, said inletand outlet-ports alternating in their longitudinal arrangement, a sleeve rotatable within the casing and provided with a plurality of sets of openings, each set being individual toone of the ports with its opening movable into successive registration with such port in the rotation of the sleeve, and a piston reciprocable within the sleeve.

2. A valve and motor mechanism comprising a casing having a plurality of inlet-ports, and a plurality of outlet-ports arranged successively at different points longitudinally of the casing, said inletand outlet-ports alternating in their longitudinal arrangement, a valve-sleeve rotatable within the casing and provided with a plurality of sets of openings, each set being individual to one of the ports with its openings movable into successive registration with such port in the rotation of the sleeve, a motor-piston reciprocable within the sleeve, and means for rotating the valve-sleeve through 360, the registration of the sleeve-openings with the casing-ports applying pressure to one side of the piston and connecting exhaust to the other side a plurality of times during each rotation of the sleeve.

3. A valve and motor mechanism comprising a casing having a plurality of inlet-ports and a plurality of outlet-ports arranged successively at different points longitudinally of the casing, said inletand outlet-ports alternating in their longitudinal arrangement, a sleeve rotatable within the casing and provided with a plurality of sets of openings, each set being individual to one of the ports with its openings movable into successive registration with such ports in the rotation of the sleeve, certain of the sleeve-openings communicating with the inlet-ports being elongated circumferentially of the sleeve, and a piston reciprocable within the sleeve.

LEE H. CUSHMAN.

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

UNITED STATES PATENTS 15 Number Name Date 148,393 White Mar. 10, 1874 1,484,030 Kitchen Feb. 19, 1924 1,827,117 Staude Oct. 13, 1931 1,965,867 Vickers July 10, 1934 20 2,244,296 Heinrich July 3, 1941 FOREIGN PATENTS Number Country Date 1,219 Great Britain 1898

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