US1363180A - Fastener-inserting machine - Google Patents

Description

S. A. DOBYNE.

FASTENER INSERTING MACHINE.

0 1 0 1 4 m 5 P w a W 5 g APPLICATION FILED MAR. 6,1917.

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S. A, DOBYNE.

FASTENER INSERTING MACHINE.

APPLICATION FILED MAR. e. 1917.

Patented Dec. 21, 1920.

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APPLICATION HLED MAR. 6. 1911.

Patented Dec. 21, 1920.

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I a; a J5 APPLICATION FILED MAR. 6, l9]?- Patented Dec. 21, 1920.

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UNITE T OFFICE.

STEPHEN A. IDOBYNE, OF ST. LOUIS, MISSOURI, ASSIGNOR TO CHAMPION SHOE MACHINERY COMPANY, OF ST. LOUIS, llIIISSOUBI, A CORPORATION OF MIS- SOURI.

Application filed. March 6.

To all whom it may concern:

Be it known that I, STEPHEN A. DoBYNn, a citizen of the United States, and residing at St. Louis, Missouri, have invented the new and useful Improvement in Fastener-Inserting Machines, of which the following is a specification.

This invention relates to fastener inserting machines, and more particularly to machines designed for operationon shoes.

In a fastener inserting machine designed for operation on shoes, the work is supported 011 ahorn or work support which maintains the shoe clamped agc inst the presser foot on the machine, the horn being intermittently depressed during the operation of the machine to permit the work to be fed by an awl, usually provided for that purpose. In order to permit removal and replacement of a shoe, means are provided for dropping the horn at the completion of the fastener inserting operation, to permit removal of the shoe, and for again raising the horn after replacement of a shoe, to clamp the work against the presser foot.

Fastener inserting machines can be designed to operate at high speeds. In order, however, that the output of such a machine be a maximum, it is necessary that the time consumed by the operator in placing a shoe in operative position, and in removing a shoe from operative position after completion o-fthe' work, bereduced to a minimum. Furthermore, the movements of, the operators hands and feet must be reduced to a minimum, not only from the efficiency standpoint, but also from the standpoint of fatigue.

Vith these ends in view, a certain type of fastener inserting machine is now pro vided with a single treadle and with a horn normally in dropped position. the treadle being so interconnected with the horn and with the clutch of the machine, that a si ngle depression of the treadle will first, raise the horn, and thereafter shift the clutch to start the machine, while release of the treadle will first shift the clutch to stop the machine and then drop the horn. Such a construction, while possessing many advan- IFASTENER-INS ERTING MACHINE.

Specification of Letters Patent. Patgnted Dem 21 1920 1917. Serial No. 152,843.

tages, has disadvantages inherent with its construction. Due to the fact that the clutch and horn are interconnected and, therefore, necessarily interdependent, the clutch can never be operated to start the machine unless the horn is raised, nor can the machine be stopped without dropping the horn. Now it is sometimes desirable to stop the fastener inserting mechanism with the horn in raised position, as is for instance the case if the operator desires to inspect the work during the progress of operating on a shoe. It is, moreover, sometimes desirable to' operate the fastener inserting mechanism without raising the horn, as is for instance the case where it is desired to preliminarily get the mechanism in working order with a new supply of fastener material. Such operation is not, however, possible with a machine in which the horn and clutch are controlled by a single treadle. Moreover, such a construc tion requires the use of a return spring for the treadle, which is heavy enough to not only permit dropping of the horn, but also shift the clutch; of course, this requires a comparatively great pressure of the operators foot, and this pressure, it must be remembered, it is necessary to maintain during the insertion of fasteners in a shoe.

One of the objects of this invention, therefore, is to provide a fastener inserting machine in which the horn or work sup port, a-nd the fastener inserting mechanism are independently controlled, but in which the shifting mechanism is so constructed and arranged, that the horn and the fastener inserting mechanism can be operated practically in unison, so as to secure the greatest efliciency.

Another object is to provide a fastener inserting machine in which the shifting mechanism for the horn and for the clutch is so constructed and arranged, as to secure their operation with a minimum of effort on the part of the operator.

Another obiect of this invention is to provide clutch shifting mechanism which is simple in construction and operation, and effective and reliable in its action.

Further objects will appear from the detail description taken in connection with the accompanying drawings, in which:

Figure 1 is a side elevation partly in section of a fastener inserting mechanism embodying this invention;

Fig. 2 is an enlarged detail side elevation of the machine head; i V

3 is a section on the line 3-3, Fig. 2;

Fig. 4: is an enlarged detail of the clutch shifting mechanism; 7

Fig. 5 is a detail end elevation of Fig. a;

Fig. 6 is another detail end elevation of Fig. 4.;

Fig. 7 is a section on the line 77, Fig. 6; and,

Figs. 8 and 9 are diagrams illustrating the operation. 7

This invention is based upon the principle of efficiency engineering that an operator may be trained to move his hand and foot in unison, or in a given sequence, and on the further principle that if an existing movement of an operators hand, when performing a certain operation, be utilized to effect another operation, then the efficiency of the operator will be increased, as distinguished from a system in which the two operations are performed by separate move ments.- In accordance with this invention, therefore, the raising and lowering of the horn to place the work into and out of operative position, is performed by a treadle controlled, of course, by the foot of an operator. The fastener inserting mecha nism is, however, controlled by a manual member, shiftable by the hand of the operator. This manual member is, however, so constructed and arranged with respect to the fastener inserting mechanism and the horn tip, as to be shifted by the hand of the operator holding the work, so as to start themachine when the work is placed in position, and so as to stop the machine when theiwork is to be removed. The natural movement of the operators hand in placing the work in operative position is, therefore, utilized to shift the manualmember to start the machine, and the natural movement of the operators hand in removing the work is, therefore, utilized to shift the manual member to stop the machine. Moreover, the

clutch mechanism is so constructed as to be Referring ,now to the accompanying drawing, 1 designates a machine column,

which has mounted thereon, a machine head 2, carrying fastener inserting mechanism. This machine head and the fastener insertingmechanism may be of any suitable construction, but in the specific embodiment shown, comprises a metallic fastenerinsertingunachin'ejsimhas shown and described in Patent No. 1,286,559, Dec. 3, 1918. This mechanism briefly comprises a presser foot 3, an awl 4, and a driver 5, all operated from a suitable drive shaft 6, carried by the machine head, and operating the mechanism, so as to puncture and feed the work step by step, and so as to drive fasteners in the punctures formed.

The shoe or'work S is clamped against the presser foot by a horn or work support mounted in the column. This horn is generally of the construction shown and described in my application Serial No. 851,718, filed July 18, 1914. It comprises generally, a horn or work support 7, supported on a horn spindle 8 and maintained in raised position by a horn spring 9, the lower end of which spring is carried by asleeve 10 sliding in the column, and connected by a link 11 with a bell-crank lever 12, carried by a bracket 13 in the column, and connected by a link 14' with a treadle 15. The treadle is raised by a spring 16 connected by a link 17 with the treadle; The horn is intermittently depressed to permit feed of the work by a cam 18 on a countershaft 19, driven by a sprocket chain 20 from the main drive shaft 6, and acting on a bell-crank lever 21, connected with the horn spindle. When the treadle is depressed, the horn will be raised by its spring to clamp the work against the presser foot, but when the treadle is released, the spring 16 will raise this treadle and drop the horn spring, and with it, the horn, thereby permitting the work to be removed. It will be noted, however, that in this construction, as distinguished from the construction shown in application Serial No. 851,718, there is no direct mechanical connection whatsoever between the horn and the clutch.

Mounted on the main drive shaft is a clutch and brake mechanism. This clutch and brake mechanism is shown and described in my application Serial No.

147,9el3 filed Feb. 2, 1917. This mechanism comprises generally, a belt pulley 30, loosely mounted on the main drive shaft 6, for endwise movement thereon, and coiiperating with a cone face on a cooperating clutch member 31 fixed to the main drive shaft. The brake band 32 also codperates with a cooperating brake surface fixed to the main drive shaft. Sliding in a bearing 34: on the machine head is a shank 35, which carriesa shifter 36. This shifter has a bevel face 3'7, adapted to cooperate with a corresponding bevel face 38 on a block 39 carried by the clutch member 31. This block 39 slides axially in the-fixed clutch member 31, and is connectedso as, by its axial movement, to slide the'loose pulley 30 out of engagement with the fixed clutch member 31, the pulley being returned into engagement by a spring40. The block 39 is also adapted to engage a lever 41, adapted to clamp the brake band on the brake surface, and thus brake the drive shaft. When the shifter 36 is elevated from the position shown in Fig.

3, the bevel face 37 will be in the path of the machine head, and rocked the bevel face 38, so that rotation of the fixed clutch member 31, and the block 39 therewith, will cause engagement of the bevel faces, so as to disengage the clutch, and further movement of the block 39 will, by its engagement with the arm or lever 41, apply the brake, so as to stop the drive shaft. When, however, the shifter 36 is depressed, it will move out of engagement with the block 39, and will thus release this block, thereby permitting the spring 40 to engage the clutch and again start the machlne. This mechanism is fully described in the application referred to.

The shifter 36 is depressed by a strong spring attached at its lower end to a pin 46 on the machine head. A bell-crank lever 47 is pivoted at 48 on the machine head, and has one arm entering a recess in the shifter, while the other arm has pivoted thereto at 49, a toe 50, adapted to be engaged by an actuator arm 51, fixed to a rock-shaft 52 in by an arm 53 from a cam wheel 54 on the main drive shaft. When the parts are moved from the position shown in Fig. 3, the actuator 51 will move the toe to the left, so as to raise the shifter against its spring 45, into the path of the block 39, so as to shift the clutch and apply the brake to stop the machine. When, however, the toe 50 is moved downwardly out of the path of the end of the actuator 51, and out of engagement therewith, then the spring 45 will drop the shifter 36, and start the machine. When, however, the toe 50 is again raised the actuator will again move it to the left, Fig. 3, and stop the machine, the shifter being now locked in position by the actuator.

A link 55 connects the free end of the toe 50 with an arm 56 on a rock-shaft 57 mounted in a bearing 64 on the machine head. This rock-shaft 57 has fixed thereto, a head 58 provided with a barrel 59, in which is mounted a plunger 60, pushed outwardly by a spring 61. This plunger bears against a lug 62 loosely mounted on the rock-shaft 57, and holds it against a lug 63 on the head 58. The lug 62 has integral therewith, or fixed thereto, an arm 65 having a lateral hand piece'66 projecting, as shown in Figs. 2, 8 and 9, contiguous to, but forwardly of the horn tip T. The arm 65 is provided with a hardened plate 67 provided with depressions 68, adapted to receive a plunger 69 mounted in a lug 011 the bearing 64, and under the influence of a spring 71. c

If the arm 65 is moved to the left, Fig. 6, it will act, through the positive engagement of the lug 62 thereon, with the lug 63 fixed to the rock-shaft 57, to move the toe 50 downwardly and out of engagement with the actuator 51, thereby permitting the spring 45 to drop the shifter 36, so as to permit engagement of the clutch to start the machine. In practice, the arm 65 is pushed in one direction until the plunger 69 drops into one of the recesses 68, thereby acting to lock the manual member in position. When the manual member 66 is moved to the right, Fig. 6, it will, by the engagement of the lug 62 with a plunger 60, return the rockshaft 57, so as to raise the toe 50 into the path of the actuator 51 (which is vibrated once for each revolution of the drive shaft), thereby causing the shifter 36 to be raised to stop the machine as heretofore described. If the manual member 68 should be returned to stop the machine, while the end of the actuator 51 is directly above the toe 50, then the upper face of the toe will engage the end of the actuator, the spring 61 permitting yield of the plunger, so as to permit full movement of the manual member 66 until the plunger 69 drops into its corresponding recess 68, and the spring 61 being now placed under tension, will cause the toe 50 to snap past the end of the actuator 51, as soon as this actuator end clears the toe, thereby permitting the toe to move into the path of the end of the actuatoras it returns. The final operation or coupling of the actuator with the shifting member of the clutch is, there fore, insured, irrespective of the position of the actuator.

Referring now to Figs. 8 and 9, it will be seen that the manual shifting member 66 is so constructed and arranged with respect to the horn tip, that the natural movements of the operators hand in placing a shoe on and removing it from the horn, can be utilized to shift this member to start and stop the machine. Fig. 8 shows the position of the operators right hand holding the shoe, when placing the shoe on the horn. At this time, the hand will be directly above the end of the manual member, so that the movement of the hand in the direction of the arrow, in placing the shoe on the horn, will cause engagement of the base of the palm with the manual member, so as to shift it to dotted position, Fig. 8, and start the machine. When, however, the shoe is about to be removed, then the position of the operators right hand will be as shown in F ig. 9, so that the third and fourth fingers, (which are now turned downwardly to form a hook) in engagement with the manual member, and the natural movement of the hand in the direction of the arrow, can, therefore, be utilized to shift this manual member to dotted position and stop the machine. It will, therefore, be seen that the natural movements of the operators right hand, holding the shoe, when the work is placed in or removed in view :of the 'it will be understood, of course, that the horn is normally in dropped position. The operator will place a shoe on the horn when in dropped position, and with his right foot, will raise the horn to clamp the shoe against the presser foot. Practically simultaneous with this movement of the foot, the palm of the operators right hand, will engage the manual member and shift it to start the machine. When the fastener inserting operation has been completed on the shoe, the operator will, with the third and fourth fingers of his right hand, shift the manual member to stop the machine, and immediately thereafter, and practically simultaneous therewith, will release the treadle to drop the horn. While, therefore, the control of the fastener inserting mechanism and of the horn is independent, so that each may be independently controlled, the operation can be practically simultaneous, and with little practice, the operator will soon become proficient in timing the operations of his hand and of his foot. The mechanism is so constructed that the machine will always stop with the fastener inserting mechanism at the completion of the insertion of a fastener, so that it will be insured that the last fastener is completely driven home.

It is obvious that various changes may be made in the details of construction without departing from the spirit of this invention. It is, therefore, to be understood that this invention is not to be limited to the specific construction shown and described.

Having thus described the invention, what is claimed is:

1. In a fastener inserting machine, a work support, fastener inserting mechanism adapted to operate on the work, a drive shaft connected to operate said fastener inserting mechanism, a clutch for said drive shaft, controlling mechanism for said clutch, including a manual member constructed and arranged to be shifted by the hand of the operator holding the work, so as to start themachine when the work is placed in position, and so as to stop the machine when the work is to be removed, and means for retaining said controlling mechanism in either of its shifted positions.

2. In a fastener inserting machine, a work support, means for moving said work support into and out of operative position,

fastener inserting mechanism adapted to operate on the work, adriveshaft connected to operate said fastener inserting mechanism, a clutch for said drive shaft, and controlling mechanism for said clutch, including a manual member constructed and arranged to be shifted by the hand of the operator holding the work.

3. In a fastener inserting machine, a work support, a pedal connected to movesaid work support to operative position, fastener flinserting mechanism adapted to operate on the work, a drive shaft connected to operate said fastener inserting mechanism, a clutch for said drive shaft, and controlling mechanism for said clutch, including a manual member constructed and arranged to be shifted by the hand of the op'eratorholding the work.

4C. In a fastener support, a pedal connected to 'move said work-support to operative position, fastener inserting mechanism adapted to operate on the work,'a drive shaft connected to operate said fastener inserting mechanism, a clutch for said drive shaft, and controlling mechanism for said clutch, including a man ual member constructed and arranged to be shifted by the hand of the operator holding the work, soas to start the machine when the work is placed with the work support in operative position.

5. In a fastener inserting machine, a work inserting machine, a work support, pedal controlled means for moving 1 said work support into and out of operative position, fastener inserting mechanism adapted to operate on the work, a drive shaft connected to operate said fastener inserting mechanism, a clutch for said drive shaft, and controlling mechanism for said clutch, including a manual member constructed and arranged to be shifted by the hand of the operator holding the work, so

as to stop the machine when the work is to be removed and when the work support is to be moved out of operative position.

6. In a fastener inserting machine, a work support, pedal controlled means for moving said work support into and out of operative position, fastener inserting mechanism adapted to operate'on the work, a drive shaft connected to operate said fastener inserting mechanism. a clutch for said drive shaft, and controllingmechanism for said clutch, including a manual member constructed and arranged to be shifted by the hand of the operator holding the work, so as to start the machine when the work is placed with the work support in operative position, and so as to stopthe machine when the work is to be removed and the work support is to be moved out of operative position.

7. In a fastener inserting machine, a work support, fastener inserting mechanism adapted to operate on the work, a drive shaft connected to operate said fastener inserting placed in position, and so as to render said mechanism, a clutch for said drive shaft, actuating mechanism operative to disengage: mechanism for actuating said clutch, mechasaid clutch to stop the machine when the nism for controlling the operation of said work-is to be removed, and means for reactuating mechanism, including a manual taining said controlling mechanism in either 15 member constructed and arranged to be of its shifted positions.

shifted by the hand of the operator holding In testimony whereof I aflix my signature the work, so as to render said actuating this 5th day of February, 1917.

mechanism operative to engage said clutch 10 and start the machine when the work is STEPHEN A. DOBYNE.

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