US3425074A - Innersole orienting and punching device - Google Patents

Description

D. F. ROBINSON INNERSOLE ORIEN TING AND P UNCHING DEVICE Feb. 4, 1969 Filed Sept. 27 1966 fa/M ATTORNEY Sheet \NVENTOR D NALD F. ROBINSON 6) $4. 6.1

Feb. 4, 1969 o. F. ROBINSON INNERSOLE ORIENTING AND PUNCHI-NG DEVICE Filed Sept. 27. 1966 INVE NTOR V v m/U u wm PUT iv A Feb. v4, 1969 D. F. ROBINSON 3,425,074

INNERSOLE ORIENTING AND PUNCHING DEVICE Filed Sept. 2?,-1966 7 Sheet: 3 01 5' INVENTOR DONALD E ROBINSON ATTORNEY Feb. 4, 1969 D. F. ROBINSON INNERSOLE ORIENTING AND PUNCHING DEVICE Filed Sept. 27, 1966 Sheet 4 \NVENTOR DO ALD F-ROBINSON ATTORNEY Feb. 4, 1969 D. F. ROBINSON I INNERSOLE ORIENTING AND PUNCHING DEVICE Sheet 5 of 5 Filed Sept. 27, 1966 ooN NON

POM

INVENTOR DO ALD EROBINSON 5, c/woyb ATTDRNEY United States Patent "ice 7 Claims ABSTRACT OF THE DISCLOSURE An apparatus for the accurate positioning of successive innersole heel portions of innersoles and punching holes therein, said holes being later used to receive pins on the lasts whereby the shoe top may be properly attached to the innersole. Positioning elements including one fixed but manually adjustable heel gauge for positioning the rear end of the heel of an innersole and two interconnected side gauge elements for contacting the opposite side portions of the heel portion of the innersole are incorporated in the apparatus. Independent pneumatic devices are connected, one to each heel side gauge for operating said side gauges and such devices are operated by either a foot treadle or by an automatic microswitch connected to the fixed gauge element.

My invention relates broadly to the shoe manufacturing art. In the manufacture of shoes, one of the initial steps includes the orientation of the innersole on the shoe last so that the shoe top, particularly the heel portion, may be properly attached to the innersole. To accomplish this, the shoe last carries two accurately positioned pins projecting from the heel portion of the shoe last and the innersole is provided with two accurately positioned punch holes to receive said pins on the last.

This invention relates to a substantially automatic pneumatic or electrical and pneumatic punching device for making said holes in innersole blanks. More particularly, the invention is directed to an automatic gauge device for such punching machines. The present practice includes the setting of such gauges manually for each separate size and type of innersole. In applicants device only the gauge which contacts the rear of the heel of the innersole blank is set manually and when properly adjusted all sole blanks of the type for which the several lasts are designed may be punched without further adjustment of this gauge. The heel side gauges are automatically adjusted upon each blank fed to the punching machine to properly center said blank for punching said two holes.

Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings wherein are set forth by way of illustration and example certain embodiments of this invention.

FIG. 1 is a perspective view of my device mounted in place on a pneumatic punch machine.

FIG. 2 is a top view of my innersole positioning device and indicating the die plate of the punch machine.

FIG. 3 is a bottom view of my innersole positioning gauge device.

FIG. 4 is a front view of my device showing the punch elements of the punch machine and the safety guard.

FIG. 5 is an exploded view showing one side gauge member, its mounting and operating means.

FIG. 6 is a diagrammatic view showing of a modified automatic actuating means for my device.

My device is shown in FIG. 1 in combination with a pneumatic punch press machine. The base plate 1 of applicants device is fitted over the die plate 2, FIG. 2, of the punch press 3, broadly shown as screwed to the base 3,425,074 Patented Feb. 4, 1969 of said punch press at 4. The punch press may be mounted on a table 5, as shown in FIG. 1, or on a pedestal or other foundation.

Referring to FIG. 2, my specific device includes a flat hor zontal base plate 1 in the general shape of a cross and having a rear arm 6, a front arm 7, and side arms 8 and 9. The rear arm -6 of said base plate has two relatively large circular openings 10 and 11 therethrough to snugly receive the guide rods 12 and 13 of the reciprocating punch member 14 of the punch press, see FIG. 1. The punch press die plate 2 extends through a rectangular opening 15 in said base plate 1 and the top surface of said punch press die plate 2 is flush with the top surface of a flat heel gauging plate 27, described below. The punch press die plate has two small openings 16 and 17 therethrough to receive the male elements 18 and 19 of the reciprocating punch member 14.

Two parallel guide bars 20 and 21 are fixed to the said base plate 1 by screws 22 and 23 and extend from front to back of said base plate 1. Between the inner edges 24 and 25 of said parallel guide bars 20 and 21 and guided thereby is a fiat heel end gauging plate 27. The flat heel end gauging plate has an elongated rectangular opening 28, longer from front to back than opening 15 in the base plate 1. To the rear of the rectangular opening 28 is fixedly attached a heel end gauging abutment 29. A retaining bar 30 extends over the rear end of the flat heel end gauging plate 27 and is fastened by screws 31 and 32 to the two parallel guide bars 20 and 21 and the base plate 1 to retain the fiat heel end gauging plate 27 on the base plate 1. The two guide bars 20 and 21 have indicia 33 and 34 thereon adjacent their inner edges 24 and 25, and the flat heel end gauging plate 27 has corresponding indicia 35 and 36 thereon as shown in FIG. 2. In order to fix said fiat heel end gauging plate into adjusted position, a bolt 37 is placed in one set of openings 38 through both the fiat heel end gauging plate 27 and the base plate 1 and a wing nut 370 shown in FIG. 3 is screwed to said bolt 37 beneath the base plate 1. The openings 38 are marked and positioned to agree with indicia 33, 34, 35 and 36.

To each side of and forwardly of the rectangular opening 15 in the base plate 1 and rectangular opening 28 in the flat heel gauging plate 27 are slidable and adjustably mounted heel side gauging abutments 39 and 40. The mounting of such heel side gauging abutments will now be described. The side arms 8 and 9 of the base plate 1 have fixedly mounted thereon reinforcing and guiding elements 41 and 42. Screws 43 fixedly attach said elements 41 and 42 to the base plate I. Said guiding elements extend from the outer ends of the arms -8 and 9 to the outer edges of the guide bars 20 and 21 as seen in FIG. 2. The guiding elements 41 and 42 each have elongated slots 44 and 45 therethrough and these slots 44 and 45 are superposed over similar slots 46 and 47 in base plate 1, FIG. 3. An elongated slide 48 extends through slots 44 and 46 and a second and similar elongated slide element 49 extends through slots 45 and 47. These slides 48 and 49 are slightly thicker than the thickness of the base plate 1 and the respective reinforcing and guiding elements 41 and 42.

The heel side gauging abutments 39 and 40 are fixedly fastened as at 52 and 53 to carrying plates 54 and 55 respectively, FIG. 2, which are in turn screwed at 56 and 57 to the tops of elongated slide elements 48 and 49 respectively. To the lower side of elongated slide element 48 a T-shaped bracket 58 is attached by screws 59, FIG. 5. The center arm 60 of the T-shaped bracket 58 is provided with an opening to receive the outer threaded end of piston rod 61 and nuts 62 and 63, FIG. 4 and FIG. 5, secure the rod 61 to the T-shaped bracket 58. The opposite end of the piston rod 61 carries a piston 64 shown in dotted line in FIG. 3. The piston 64 is located inside of a cylinder 65 having an inlet connection 66 connected to pneumatic supply and exhaust line 67 and a second inlet 68 connected to a second pneumatic supply and exhaust line 69. The cylinder 65 is fixedly attached to the under side of the arm 8 of the base plate 1 by angle brackets 70 and 71. In like manner the lower side of elongated slide element 49 carries a T-shaped bracket 72, FIG. 3 and FIG. 4, and the center arm of said bracket 72 is attached to the outer end of piston rod 73 by nuts as shown. The opposite end of piston rod 73 has a piston, not shown, connected thereto and operable within cylinder 74, FIG. 4, attached to the lower side of arm 9, said cylinder 74 is connected to pneumatic supply and exhaust line 75 at 76, FIG. 3, and to the second supply and exhaust line 77 at 78. The two pistons in the cylinders 65 and 74 are in opposed relation and in operation move the side heel gauging abutments 39 and 40, FIG. 2, toward and from each other to engage and center the heel portions of innersoles placed between said heel gauging abutments.

In order that the side heel gauging abutments move equally and synchronously they are connected to each other through the following described linkage, best shown in FIG. 3. A slidable link 79, broadly of L configuration has its shorter arm 80 connected through a roller bearing 50 attached to elongated slide 48 through an elongated slot 81 in arm 80. The long arm 82 of the L-shaped slidable link 79 is attached intermediate its ends to base 1 by roller bearings 83 and 84 mounted on the under side of the base 1, FIG. 3. The long arm 82 has elongated slots 85 and 86 to receive said roller bearings. The outer end of the long arm 82 has a roller bearing 87 mounted thereon. The roller bearing mounting means described above permit only rectilinear movement of slidable link 79. A second link 88 is pivoted intermediate its length to the underside of the base 1 by a roller bearing pivot 89. Each end of the pivoted link 88 has elongated slots 90 and 91. One of the slots 90 is connected to slide 49 by a roller bearing 51 fixed to said slide 49. The other slot 91 is pivotally and slidably connected to the roller bearing 87 carried by the long arm 82 of the slidable L-shaped link 79.

A suitable supply of compressed air such as a tank 100, FIG. 4, or other conventional compressed air supply means provide power for the operation for the punch machine as well as for the pistons in the cylinders 65 and 74. Pneumatic supply and exhaust line 67, FIG. 3, from cylinder 65 and supply and exhaust line 75 from cylinder 74 are connected together by a T-fitting 94. Air under pressure is admitted to T-fitting 94 by a tube 95 connected to one end of a reversing pneumatic valve 96, FIG. 4. Pneumatic supply and exhaust line 69, FIG. 3, from cylinder 65 and supply and exhaust line 77 from cylinder 74 are connected together by a second T-fitting 97. Air under pressure is admitted to T-fitting 97 by a tube 98 connected to the opposite end of reversing pneumatic valve 96, FIG. 4. The reversing pneumatic valve 96 obtains its air pressure through tube 99, FIG. 4, connected to tank 100. A foot treadle 101 operatively connected to the reversing pneumatic valve 96 by a rod 102 actuates said valve to supply compressed air to opposite ends of the cylinders 65 and 74 and provide for exhaust from the other ends of the cylinders through the connections described above. The reversing pneumatic valve includes an exhaust port 960 which operates to discharge compressed air from the opposite ends of the cylinders 65 and 74 as the compressed air is fed to the other ends of said cylinders. The reversing pneumatic valve is also operatively connected by means not shown to the punch press to drive said punches first in punching direction and then retracting direction. After the punches have withdrawn, the reversing pneumatic valve is automatically reversed and compressed air supplied to the opposite ends of cylinders 65 and 74 through the connections also described above, see FIG. 3, and the compressed air exhausted from the first ends of said cylinders.

Applicants device also includes a substantially transparent safety screen 103 attached by angle brackets 104 and 105, FIGS. 2 and 4, to the guide bars 20 and 21 forwardly of the punch elements 18 and 19 and the heel side engaging abutments 39 and 40. The safety screen 103 has an opening 106 through which the innersoles are fed for punching.

OPERATION The operator standing in front of arm 7 of the base 1 manually feeds an innersole blank heel first into opening 106 in the safety screen sliding it upon the fiat heel gauging plate 27 and the punch die plate 2 until the heel end of the innersole blank contacts the heel end gauging abutment 29.

At this time the operator presses the foot treadle 101, FIG. 4, which through rod 102 actuates the automatic reversing pneumatic valve 96. Valve 96 admits compressed air from source tank through tube 99 to composite supply line 95, T 94, inlet supply lines 67 and 75, connections 66 and 76 to the outer ends of cylinders 65 and 74. At the same time the reversing pneumatic valve 96 allows the compressed air already contained in the opposite ends of cylinders 65 and 74 to exhaust through connections 68 and 78, lines 69 and 77, T 97, line 98, and exhaust opening 960 in the reversing pneumatic valve 96. The piston 64 in cylinder 65 and the piston not shown in cylinder 74 are forced toward each other by the incoming compressed air. The piston rods 61 and 73 carried by said pistons operate through Ts 60 and 72 to move slides 48 and 49, and carrying plates 54 and 55, and heel side gauging abutments 39 and 40 toward each other to engage the sides of the heel portion of the innersole blank to properly center it relative to the punch elements 18 and 19. The slide elements 48 and 49 being interconnected through links 79 and 88, the movement of said heel side gauging abutments 39 and 40 is simultaneous and equal in amounts. Immediately after this operation the punch elements 18 and 19, FIG. 4, are moved to punch holes through the heel portion of said innersole blank and return to original withdrawn position. After the holes are punched, the valve 96 reverses and compressed air is introduced through composite supply line 98, T 97, supply lines 69, 77, inlets 68 and 78 to the opposite sides of the pistons in cylinders 65 and 74. At the same time the compressed air is exhausted from the other ends of the cylinders. The pistons moving in the reverse direction cause movement of the side heel abutments 39 and 40 away from each other and the punches to move upward away from the innersole to release the heel portion of the innersole which is manually removed.

The safety guard screen 103 being transparent enables the operator to view the entire operation yet prevents his hand from reaching the punches.

This whole operation of positioning and punching the innersole requires less than one second and the feeding and punching proceeds as fast as the operator can feed and withdraw innersole blanks to and from the device.

It should be further noted that the shape or contour of the contacting surfaces of the innersole heel side gauge abutments 39 and 40 are designed to a composite of several different shoe lasts so that such abutments very seldom need to be replaced, however, they are replaceable should occasion arise.

MODIFICATION In another form of applicants device the foot treadle is eliminated and microswitches control the entire operation of the device except for the manual insertion and withdrawal of the innersole blanks. This modification of applicants device is shown in FIG. 6. i

A microswitch 200 is mounted on the contacting surface of the heel end gauging abutment 290 and electrically connected through wires 201 to a relay 202. This relay which is a Porter Brumfield Relay, type KB17A is connected to an electric power circuit through wires 203, manual switch 204 and plug 205. A- second microswitch 206 having a yieldable controlele'ment 207 thereon is adjustably mounted on a fixed portion of the punch machine, not shown, by means of plate 208. A tripper or contact element 209 is fixed to the sliding punch member 14, FIG. 1. This microswitch 206 is electrically. connected to the relay by wires 210. The relay is connected by pairs of wires 211 and 212 to a double solenoid opera ated valve 213, known commercially as ,Modemair .type MV3-0606. Valve 213 is connected to a source of compressed fluid by conduit 214 and to intake and exhaust conduits 215 and 216. Conduit 215 is connected to a T fitting such as 94, shown in FIG. 4, and conduit 216 is connected to a T fitting such as 97, FIG. 4. In the modi fication the double solenoid operated valve takes the place of the reversing valve 96, FIG. 4. The double solenoid operated valve is also operatively connected by means not shown to the punch press to drive said punches first in punching direction and then retracting direction. The double solenoid operated valve has two exhaust ports 217 and 218 which operate alternately to relieve pressure in the opposite ends of the cylinders from the ends receiving the compressed fluid.

The operation of this embodiment is substantially similar to that of the first described device. An operator slides the heel end of an innersole through the opening in the safety screen and against the microswitch element 200 which trips relay 202. The relay sends an electric impulse to the double solenoid operated'valve which operates to provide compressed fluid to the cylinders and allows the compressed fluid in the opposite ends of the cylinders to exhaust. The incoming compressed fluid operating the heel side engaging abutments and the cylinder operating the punch elements in a downward punching direction. The action of the heel side engaging abutments and the punches takes place substantially simultaneously but not exactly. As the punch elements reach the bottom of their stroke contact element 209 trips the second microswitch 206 by slight movement of control element-207 and again operates the relay 202. Upon this operation of the relay the double solenoid operated valve is reversed and the compressed fluid causes the reverse operation of the punch elements and the side heel gauging elements. The operator then removes the punched innersole and replaces it with another unpunched innersole. With this embodiment the innersoles are punched accurately at a much greater speed and with far more efficiency.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

What I claim and desire to be secured by United States Letters Patent is:

1. An innersole orienting and centering device foruse with hole punching machines comprising: a base plate having an opening therethrough to receive the female die element of a hole punching machine, a heel end engaging abutment on the base plate located to the rear of said opening, means adjustably attaching the heel end engaging abutment to the base plate, heel side engaging abutments located in front of the heel end engaging abutments,

and to each side of the opening, means movably connecting said heel side engaging abutments to the base plate, separate fluid actuated means, means connecting said separate fluid actuated means, one to each heel side engaging abutment for operating said heel side engaging abutments toward and from each other to orient and center the heel end of an innersole placed therebetween relative to the die elements of the hole punching machine, interconnected slidable and pivotal means, means connecting said interconnected slidable and pivotal means to said heel side engaging abutments to provide equal increments of movement of the heel side engaging abutments toward and from each other, an elongated plate, means providing said plate with an opening therethrough corresponding to but larger than the opening in the base plate, means fixedly attaching the heel end engaging abutment adjacent one side of said opening, guide bars, means mounting said guide bars in parallel relation on said base plate, one on either side of the opening in the base plate, said elongated plate resting upon said base plate between and guided by said guide bars, indicia markings on the guide bars and on the elongated plate to indicate the setting of the heel end engaging abutment relative to the female die element and means fixedly clamping said elongated plate in .adjusted position according to -a predetermined indicated setting.

2. An innersole orienting and centering device as recited in claim 1 wherein the interconnected slidable and pivotal means comprise, a slidable link; roller bearing means on the under side of said base plate supporting said slidable link; a roller bearing connecting one of the heel side engaging abutments to one end of said slidable link; a second link; means pivotally connecting the second link intermediate its length to the under side of said base plate; a roller bearing means connecting one end of said pivotally mounted link to one end of said slidable link and roller bearing means connecting the other end of said pivotally mounted link to the other heel side engaging abutment.

3. An innersole orienting and centering device for use with hole punching machines as set forth in claim 2, wherein there is a transparent guard screen; means mounting said guard screen on said base plate forwardly of the abutments; and means providing an opening in said guard screen of smaller dimensions than an opera tors hand but large enough to receive the heel end of an innersole.

4. A work piece orienting device for a punch press machine comprising: a support; a stationary abutment; means adjustably fixing said stationary abutment on said support; two movable abutments on said support, one located to each side of the stationary abutment; means operable to move said movable abutments toward and from each other to orient an article relative to the punch elements of the punch press, a portion of which article contacts said stationary abutment; said means including two cylinders, one cylinder for each movable abutment; means fixedly attaching said cylinders to said support, each cylinder having opposite ends; two pistons, one located within each of the stationary cylinders between the ends thereof; pipes and pipe connections to each end of each of the stationary cylinders for feeding and discharging of compressed fluid to and from each end of said cylinders; a source of compressed fluid and means connected to said pipes controlling the flow of fluid to and from the ends of the cylinders through said connections; means connecting the pistons, one to each movable abutment respectively, said fluid in each cylinder operative through the pistons and connecting means to move said movable abutments toward and from each other; a slidable link means and, means connecting said slidable link means at one end to one of the means connecting one of the pistons to one of the movable abutments; roller bearing means; means mounting said roller bearing means on said support; slot means in said slidable link for connecting said roller bearing to said slidable link means, said roller bearings and slots restraining movement of the slidable link to rectilinear movement; a pivoted link; means pivotally connecting the pivoted link intermediate its length to said support; roller bearing means connecting one end of said pivoted link to one end of said slidable link; roller bearing means connecting the other end of the pivoted link to the means connecting the other piston to the other movable abutment, said slidable link and pivoted link and their connections restraining the opertaion of the movable abutments to equal increments of movement first toward each other to center a work piece and then away from each other to release the same.

5. A work piece orienting and centering device for a punch press machine, comprising: a flat base plate; means providing a central rectangular opening in said base plate for receiving the female die of said punch press machine; guide means fixed to said base plate on opposite sides of said opening; an adjustable plate between and guided by said guide means; means providing a rectangular opening in said adjustable plate, said opening being larger from front to back than the opening in said base plate; an abutment fixed to the adjustable plate adjacent the rear of the rectangular opening in said plate; indicia means on the guide means and on the adjustable plate; means for fixing the adjustable plate in adjusted position determined by said indicia; side abutments, one on each side of the rectangular opening in said adjustable plate and located slightly above said plate in substantially sliding engagement with said adjustable plate; carrying plates; means connecting said side abutments to opposed ends of the carrying plates; means in said base plate providing slots; a slide key slidable in each of said slots; means attaching said carrying plates to the top of each slide key respectively above the base plate; T brackets; and means attaching said T brackets to the bottoms of each slide key respectively beneath said base plate; piston rods; means fixedly attaching one end of each piston rod to a T bracket respectively; two cylinders; means fixedly mounting said cylinders on the base plate beneath the same; a piston mounted on the other end of each piston rod and slidable within the respective cylinders; inlet and outlet means at each end of each cylinder; pipe means connected to each said inlet and outlet means; valve means connected to said pipe means for applying compressed fluid and allowing exhaust from said inlet and outlet means alternately; an exhaust opening in said valve means; a compressed fluid source; means connecting said compressed fluid source to said valve means; a slidable link; roller bearing means fixed to the under side of said base; said slidable link having means providing slots to slidably support said slidable link on said bearings; a roller bearing mounted on one of the slide keys; and slot means on one end of said slidable link and fitted over said said roller bearing; a roller bearing mounted on the other end of the slidable link; a pivoted link; means pivotally attaching said pivoted link intermediately of its ends to the under side of said base; slot means on one end of the pivoted link connected to the roller bearing on the other end of the slidable link; a roller bearing mounted on the other slide key; and slot means in the other end of the pivoted link slidable on said roller hearing, the arrangement being such that'when the compressed fluid enters the outer ends of the cylinder it forces the pistons toward each other to move the side abutments toward each other and into contact with the sides of a work piece to orient and center the same relative to the punch press dies, the slidable and pivotal links restraining the movement of said side abutments to equal increments of movement; after the punching of the work piece the fluid flow is reversed and the side abutments separated to release the work piece preparatory to receiving another work piece.

6. The work orienting and centering device of claim 5 where in a transparent shield having an opening therein is mounted on said guides and base plate forwardly of the abutments; means fixedly attaching said shield to said guides and base plate, said shield preventing the operators hands from coming into contact with the punch elements of the punching machine.

7. In combination an innersole orienting and centering device and a hole punching machine having a base; a stationary female die element; means mounting said female die element on said base; a reciprocating male hole punching element; means mounting said male hole punching element for reciprocation to and from said stationary female die element; pneumatic means operatively connected to said male hole punching element for reciprocating the same; a flat base plate having an opening therein, the stationary die element extending through said opening; means fixedly connecting said base plate to the base of the hole punching machine; a stationary heel end abutment adjustably mounted on said flat base plate adjacent said opening; means for adjusting said stationary heel end abutment toward and from said opening in the plane of said opening; a movable heel side abutment to one side of said opening forwardly of the heel end abutment; a second movable heel side abutment to the opposite side of said opening and forwardly of the heel end abutment; means movably mounting said heel side abutments on the flat base plate; two pneumatic means; means connecting one pneumatic means to each of said heel side abutments to move the same toward and from each other; means interconnecting said heel side abutments to equalize the movement of said heel side abutments; a source of compressed fluid for actuating the pneumatic means for operating the male hole punching element and the pneumatic means for operating the heel side abutments; means including valve means connecting all the pneumatic means to said source of compressed fluid; a microswitch; means mounting said microswitch on the heel end abutment for contact with the heel end of an innersole; a second microswitch; means mounting said second microswitch on the base of the hole punching machine; a tripping element; means attaching the tripping element to a portion of the reciprocating male hole punching element, said tripping element being operative to trip the second microswitch at the punching end of the movement of the male hole punching element; an electric circuit; electric switches connected to said valve means and to said microswitches through said electric circuit to actuate said valve means, said first microswitch being operated by the heel of the innersole to be punched, and upon operation of said first microswitch, the valve is operated first to introduce fluid to move the heel side abutments into contact with the heel sides of the innersole and secondly to actuate the punch in a punching direction, the punch reaching the lower end of its reciprocating movement, the second microswitch is tripped which operates the valve to reverse position and feed fluid to withdraw the punch and heel side abutments to initial positions.

References Cited UNITED STATES PATENTS 2,046,604 7/1936 Bolton 12 123 x 2,323,809 7/1943 Flink 12 123 x 2,735,118 2/1956 MacKenzie 12-17 PATRICK D. LAWSON, Primary Examiner.

Images