US2850927A - Sheet binder - Google Patents

Description

Sem 9, w58 G. G. GRINNELI. 2,850,927

SHEET BINDER Original Filed Jan. 5, 1941 5 Sheets-Sheet 1 SHEET BINDER 5 Sheets-Sheet 2 G. G. GRINNELL Sept. Q, E958 Original Filed Jan. 3, 1 941 oocuocooooooooobaoooonooooooooooooo ooooooooT oooooooooccofooooouonoobocoooooboooo oooooooo oolryokoooooo OOTLOK o www: NQ www f SN Sept, 9, i958 c. G. GRINNELL 2,850,927 I SHEETVBINDER ,original Filed Jan.. s, 1941 5 sheets-met s Sept., 9, E95 G. G. GRINNELL SHEET BINDER origina 5 sheets-sheet 4 Sept. 9, 1958 G. G. GRINNELL 5 Sheets-Shea?l 5 ffy 204 e Zi f G) zw 0 /za zg: f7

/sz /za United States Patent O "i SHEET BWDER George G. Grinneli, Boston, Mass.

Continuation of application Serial No. 175,456, July 22, 1950, which is a continuation of application Serial No. 596,883, May 31, 1945, which is a division of application Serial No. 373,921, January 3, 1941, now Patent No. 2,377,340, dated .lune 5, 1945. rThis applicationv February 11, 1954, Serial No. 409,608

My invention relates to sheet binders.

This application is a continuation of my copending application Serial No. 175,456, filed July 22, 1950, now abandoned, which is a continuation of my application Serial No. 596,883, filed May 3l, 1945, now abandoned, which is a division of my application Serial No. 373,021, filed January 3, 1941 (now Patent No. 2,377,340).

One of the objects of my invention is to provide apparatus for drilling superimposed sheets without burring the outermost sheets.

Further objects and advantages of the invention will be apparents from the description and claims.

In the drawings, in which my invention is illustrated,

Fig. 1 is a perspective view showing the drilling and inserting apparatus;

Fig. 2 is a front elevational perspective view of the drilling and inserting apparatus;

Fig, 3 is a perspective view showing the tape feeding and fastener segregating mechanism;

Fig. 4 is a perspective View showing the Segregating mechanism and inserting mechanism;

Fig. 5 is a vertical transverse section showing the segregating mechanism, inserting mechanism, and the drilling mechanism;

Fig. 6 is a vertical section showing the drilling mechanisrn;

Fig. 7 is an enlarged transverse vertical section showing the inserter, forming anvil, and forming die;

Fig. 8 is a horizontal sectional View ony the line 17--17 of Fig. 5, and

Fig. 9 is a bottom View of the tablet carriage.

Referring now to the drawing, the tablet drilling and fastener-inserting mechanism provided comprises broadly a horizontally movable carriage 62 (Figs. l, 2, 5, 7 and 9) on which the pad of sheets 11 to be fastened together are secured in position, a treadl'e-controlled step-by-step feed for this carriage to shift the tablet edgewise after each vdrilling and fastener-inserting operation to bring the tablet in position for another drilling and fastenerinserting operation, a treadle-controlled return mechanism for returning the tablet carriage to initial position after all of the fasteners have been inserted, a pair of rotary drills 63 (Figs. l, 4, 6 and 7) for drilling a pair of holes in the tablet pad, properly spaced to receive the legs of a fastener element and a mechanism itl for aligning the fasteners and inserting them feet first through the pair of previously-drilled holes in the tablet pad 11.

Three motors are provided, one 64 (Fig. 2) for electing the rotary movement of the pair of drills 63, another 65 for effecting the return travel of the tablet carriage 62 and another 66 (Fig. 3) for effecting the other operations including the axial feed movement of the drills 63, the escapement mechanism for the step-by-step feed of the tablet carriage, the insertion of a U-shaped fastener element 4 (see Fig. 3), and the feed for the two guard tapes 67 and 68 which are fed, respectively, above and below the tablet 11 as it is being drilled, to prevent the mutilation of the outside sheets of the tablet by the y controlled motor driven shaft 91 (Fig. 3).

2,850,927, Patented Sept. 9, 1958 point of the drill. The operation of the pedal 69 (Fig. 2) causes the axial movement of the drill head 8, the actuation of the pedal 711 causes the insertion of a fastener element, and the operation of the pedal 71 causes the return of the tablet carriage.

ln operation it is customary, first, to depress the pedal 69 to drill a pair of holes in the tablet pad 11 without causing the operation of the fastener inserter, then to shift the foot slightly to the left, as viewed in Pig. 2, so as to rest on both pedals 69 and '70, and depress both pedals to cause the insertion of a fastener 4 into the two holes and to cause the drilling of two holes spaced from the first two holes for the subsequent insertion of another fastener. As explained hereinfater, each time the pedal 69 is depressed, it will cause and up-and-down movement of the drills 63 and a one-step feeding movement of the carriage 62.

For the insertion of the final fastener element of the ta let sheets, the operator may either depress both pedals 69 and 7i?, causing the rise of the drill head and the insertion of a fastener in the last pair of holes in the tablet (the tablet having passed beyond the position in which it will be in the path of the drills), or the operator may simply depress the inserted pedal' 76 causing the insertion of a fastener without any axial movement of the drill head. When the last fastener has been insterted in the tablet, the operator depresses the carriage-return pedal, causing the carriage to return to its initial position.

After passing through the tablet, the point of the drill enters a wooden block 72 (Fig. 5) which is automatically pressed against the upper guard tape during the drilling operation. The first drilling movement forms a guide recess or pocket in the under face of the wooden block 72 which serves to center the point of the drill as it passes through the tablet.

The mechanism for feeding the U-shaped fasteners rom the yvertical stack 60 to the forming anvil 73 and forming die 74 (Figs. 4, 5, 7 and 8) comprises the selecting and segregating plunger 59 operating in a horizontal plane underneath the stack of fasteners, and a pair of spaced parallel aligning rock arms 75 (Fig. 5) for moving the segregated fastener 4 from a horizontal position to a vertical position in alignment with the inserter plunger 76 which reciprocates up and down and, on its downward stroke, engages the cross bar 51 of the U-shaped fastener 4 and forces the fastener downwardly to cause its lower ends to bend around inside of the arcuate guide channeis in the die 74 and around the semicylindrical surface of the anvil 73, as shown in Figs. 2, 4, 5, and 7.

A suitable spring-pressed presser foot 76a is provided for holding the tablet pad 11 down on the carriage 62 during the inserting operation.

vThe drive for the step-by-step carriage feed comprises a cord or cable 77 (Fig. 2) having one end 78 secured to the tablet carriage 6'2- and the other end 78a secured to the frame, a pulley 79 over which this cable 77 passes, and a weight 80 to the upper end of which a pulley 81 is secured, vabout which the cable passes. The step-bystep release or escapement for the carriage travel (Figs. 1, 2 andf5) comprises a reciprocating stop Slide 82, the upper end S3 of which cooperates with stop pins 84 inserted in spaced openings S5 on the rack bar 92 secured to the carriage, a lever 87 pivotally mounted at 88 (Figs. 1 and 3) and having one end pivotally secured at 89 to the stop slide S2, and a cam 90 mounted on a clutch- Each time the shaft 91 makes one revolution, the cam 90 will cause the lever 87 to rock up and down and will cause the withdrawal and return of the stop pin 83 on the slide 82 with respect to the stop pins 84 on the carriage rack 92. The movement of this'stop slide 82 is so rapid that it will release one stop pin 84 on the carriage and catch the next stop on the carriage before the weight 80 has time enough to pull the carriage stop past the stop slide.

For returning the carriage to initial position after it has completed its step-by-step feeding movement tothe left, as viewed in Fig. 2, an endless cable 93. is provided having a lost-motion connection with the tablet carriage 62 and passing over the end pulleys 94 and 9,5. The cable 93 may be brought into driven relationship with respect to the drive pulley 96 by means of cable tightener pulleys 97 and 98 mounted on the pedal-controlled rock lever 99. The drive pulley 96 is driven from the motor 65 by means of a cable 100 passing over the drive pulley 101 on the motor and over a driven pulley 102 mounted on the shaft 103 to which the drive pulley 96 is secured.

When the carriage return pedal is depressed, it pulls the carriage stop 83 out of the way of the stop abutment 84 of the carriage and rocks the rock lever 99 about its pivot 104 to move the cable tightener pulleys 97 and 98 upwardly to press the cable 93 firmly against the drive pulley 96. The carriage return pedal 71 is secured to the stop slide 82 by means of a link 105, a crosshead 106 (Fig. l) secured to the link 105, and a coil compression spring 107 engaged by the crosshead 106 and bearing on the head 108 of a slide rod 109 secured to the slide 82. The crosshead 106 slides on the rod 109 until the spring 107 is compressed sufficiently to press the slide 82 downward. The rockvlever 99 is secured to the crosshead 106 by means of a rod 110 pivotally connected with the lever 99 at 111. A spring 112 is provided which tends to hold the stop slide 82 in raised position and to hold the cable tightener pulleys 97 and 98 away from the cable 93.

The cam 90 can cause withdrawal and return of the stop 83 without causing movement of the cable tightening lever 99, since the rod 109 is slidable in the crosshead'106. When the pedal 71 is depressed it first actuates theV cable tightening lever 99 and then, when the downward pressure of the spring 107 overcomes the upward pressure of the spring 112 on the stop slide 82, the stop 83 will be withdrawn to enable the drive pulley 96 tov returnr the tablet carriage 62 to starting position.

The right-hand movement of the carriage 62, as viewed in Figs. 1 and 2, under the driving action of the drive pulley 96, is limited by means of a button 113 on ther carriage-return cable which engages astop 114 on theA frame. return cable 93 and the tablet carriage by'means of a button 115 secured to the cable and engaging a forked abutment 116 on the carriage, which straddles the cable so that the button 115 on the cable can engage the fork. Because of the forked connection 116 between the cable and carriage, the carriage may be readily disconnected and removed from the cable when desired.

The mechanism for withdrawing the tapes 67 and 68 from the storage spools 122, guiding them to positions, respectively, above and below the tablet being bound (Figs. l, 2, 3, 4, and 6) comprises the guides 123 for directing the tapes into position with respect to the'tablet, and a pair of step-by-step feed rolls 124 between which both tapes pass after they have moved past the tablet. The mechanism for giving the step-by-step feed to these two feed rolls comprises a ratchet wheel 125 (Figs. l and 3) on the shaft of one of the feed rolls 124, a rock lever 126 coaxial with this ratchet wheel, a pawl 127 mounted on this lever actuating the ratchet wheel 125, a link 128 pivotally connected with the rock lever, a bell crank pivotally mounted at 129 and havingY one arm 130. pivotally connected with the link 128, a connecting rod 131 pivotally connected at 132 with the other arm- 133 of the bell crank, and a crank 134 (Fig. 2) towhich the other end of the connecting rod is pivotally secured,V

mounted on the shaft 91. With this construction, it will be seen that every time the shaft 91 is given a single revolution the pawl carrying lever, 126 will, be'V A connection is provided between the carriage- 4 given a movement back and forth to effect a single feed step of the tape feed rolls 124. The transmission is so timed that the step feed of the tape will be made at a time when the drills 63 are withdrawn from the tablet so as not to interfere with the tape feeding movement.

As previously indicated, the purpose of the guard tapes 67 and 68 is to prevent the mutilation of the outside sheets of the tablet by the point of the drill. The feed for these tapes is comparatively slow. After passing through the feed rolls.124, the perforated tapes pass downwardly and may be torn olf` by the operator from time to time and thrown away or otherwise disposed of.

The drive for the shaft 91 is from the motor 66 through the belt 135 (Figs. 2, 3 and 4) running over the pulley on the motor shaft, a pulley 136 over which the belt runs, a shaft 137 on which` this pulley is mounted, a sprocket wheel 138 mounted on this shaft, a sprocket chain 139 running over this sprocket wheel 138 and a large sprocket wheel4 140 connectible and disconnectible with respect to the, shaft 91 by means of a clutch 141 (Fig. 3) controlled by the pedal 69' inY such a manner that when the clutch is released the shaft 91 will stop in a fixed definite position.

The transmission from the clutch pedal 69 (Fig. 2) to the clutch 141 comprises a rock arm 142 mounted on the rock shaft 143 to which the pedal 69 is secured, a link 144 pivotally connected at one end to this rock arm, and a clutch controlling member 145 pivotally secured to the upper end of this link. This clutch pedal 69 which controls the tape'feeding operation also controls the axialA movement of the drills 63 in effecting the drilling operation. The transmission, by which this. axial feed movement of the drill head is effected, comprises a bevel gear 146 mounted on the shaft 91, a bevel gear 147 (Figs. 1, 3 and 6) meshing with the rst bevel gear 146, a shaft 148 on which this second bevel gear 147 is mounted, a combination cam and crank disc 149 secured to this shaft 148, and a connecting rod 150 pivotally secured to the crank shaft at one end and pivotally secured to the vertically slidable drill head 151 at the other end. With this construction it will be seen that every time the tape is given a feed step the drill head 151 is caused to be moved up and down in proper timed relation.

From the ,preceding description, it will be seen that each time the p edall69 is `depressed the shaft 91 will be given one complete revolution, which causes the up-and-down movement of the drill head 151, the one-step feeding movement of the tape, and the one-step feeding movement of thetablet carriage 62, all in proper timed rela tion.

In order to bring the wooden block 72 down on the tablet at the proper time in the drilling operation, it is mounted on a slide 152 vertically movable in the standard 153 and caused to move up and down by means of the cam formed on the edge of the crank disc 149 which engages a follower roller 154 on the lever 155 pivotally mounted at 156 and connected with the vertically movable slide 152 by means of a connecting rod 157 pivotally secured to the lever at 158 and pivotally secured to the sliding block at 159.

In use, when the machine is supplied with the material to be operated on, including a at wire and the guard tapes 67 and 68, and the machine is put in operation, fastener forming mechanism operates continuously to supply the U-shaped fasteners 4 to the guide 7 from which guide they are removed, one at a time, by a segregating and feedingmechanism. The timing of these successive operations of the feeding mechanism is controlled by the operator. As previously indicated, the operator places a pad yor tablet in position on the carriage 62 and allows the carriage to move the left as viewed in Fig. 10, until a stop pin 84 engages the stop 82 to bring the tablet into proper position for drilling and` inserting the fastener. The operator then depresses the pedal 69 to drill a pair of holes in the tablet or pad 11 without causing the operation of the fastener inserter, then shifts the foot slightly to the left, as viewed in Fig. 2, so as to rest on both pedals 69 and '70, and then depresses both pedals to cause the insertion of a fastener 4 into the two holes and to cause the drilling of two holes spaced from the rst two holes for the subsequent insertion of another fastener.

For the insertion of the nal fastener element of the tablet sheets, the operator may either depress both pedals 69 and 70, causing the rise of the drill head and the insertion of a fastener in the last pair of holes in the tablet (the tablet having passed beyond the position in which it will be in the path of the drills), or the operator may simply depress the inserter pedal 70 causing the insertion of a fastener without any axial movement of the drill head. When the last fastener has been inserted in the tablet, the operator depresses the carriagereturn pedal, causing the carriage to return to its initial position.

While the word tablet has been used in describing the apparatus, it is to be understood that this apparatus may be useful in any situation where it is desired to perforate and bind sheets.

Further modifications will L'be apparent to those skilled in the art, and it is desired, therefore, that the invention 25 be limited only by the scope of the appended claims.

i claim:

1. Apparatus for drilling a hole through a pad of fibrous sheets comprising a rotary drill, means for rotating said drill and moving it longitudinally, propulsion means for moving said pad step by step transversely with respect to said drill to bring dilferent portions of the pad into drilling positions, and propulsion means for conveying a perforable burr-preventing sheet to a position juxtaposed to an outside sheet of the pad and in the path of the Idrill between the drill and the pad prior to the drilling of said outside sheet.

2. Apparatus for drilling a hole through a pad of librous sheets comprising a rotary drill, means for rotating said drill and moving it longitudinally, step feed means for feeding a perforable burr-preventing sheet to a position juxtaposed to the outside sheet of the pad and in the path of the drill between the drill and pad prior to the drilling of said outside sheet.

3. Apparatus for drilling a hole through a padof fibrous sheets comprising a rotary drill, means for rotating said drill and moving it longitudinally through said pad thickness, and propulsion means conveying perforable burr-preventing sheets to positions juxtaposed to the outermost sheets of the pads prior t-o the engagement of said drill with said pad.

References Cited in the file of this patent UNITED STATES PATENTS 395,592 Schwarzler Jan. 1, 1889 796,346 McBee Aug. l, 1905 783,403 Knight Feb. 21, 1905 2,297,078 Schlichter Sept. 29, 1942

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