US520734A - Machine - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

B. T GREENFIELD BOOK STAPLINGMAUHINE.

Patented May 29, 1894.

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UNITED STATES PATENT OFFioE.

EDWIN T. GBEENFIELD, OF NEW YORK, N. Y., ASSIGNOR TO THE GREEN- FIELD AUTOMATIC FASTENER COMPANY, OF SAME PLACE.

BOOK-STAPL ING MACHINE.

SPECIFICATION forming part of Letters Patent No. 520,734, dated May 29, 1894.

Application filed January 2, 1894. Serial No. 495,474. (No model.)

To all whom it" mag concern:

Be it known that I, EDWIN T. GREENFIELD, a citizen of the United States, residing at New York, in the county of New York and State of New York, have made a new and usef ul Improvement in Paper-Binding Machines, of which the following is a specification.

My invention relates particularly to paper binding machines of that type in which a number of sheets of paper, cloth or analogous material are bound together by wire or analogous staples through the agency of mechanism which first cuts a staple blank, then forms it into a staple, and afterward drives and clinches it through the material to be bound, and to this end it consists in improvements upon an invention disclosed in a prior patent granted to me on the 27th day of December, 1892, and numbered 488,735.

My invention has for its object, the simplification and rearrangement of certain of the parts of the apparatus disclosed in theaforesaid patent in such manner as to render it more compact, cheaper to construct and easier to operate with less liability of getting out of repair.

In the invention disclosed in the aforesaid patent the wire. sustaining reel is sustained upon an arm located at right angles to the body of the machine and the feeding mechanism therefor is actuated through thelagency of lovers moved by springs on the backward movement of the staple forming and staple driving apparatus. In that apparatus also it is necessary to actuate a moving anvil through theagency of independent mechanism for the purpose of gripping or holding the material while a staple is being formed, driven and clinched. The presentinvention is very much simpler than the structure shown and described insaidpatent, in that the feeding of the wire is effected simply by lifting or tilting'the entire mechanism into a second position after each staple is formed and clinched through the material, the wire sustaining reel and its attachments being located in alignment with the body of the machine thereby diminishing its total size and rendering it more symmetrical in form.

The invention will be fully understood by referring to the accompanying drawings, in which Figure 1 illustrates the complete apparatus .partly in section in full lines in position to form and drive a staple and partly in elevation in dotted lines in the second position illustrating the operation of the feeding mechanism. Fig. 2 is a plan view of the entire machine. Fig. 3 is a detail end view of the working parts of the staple forming and staple driving plungers having a guide-way in their ends for guiding the staple forming wire between them and the staple forming mandrel. Figs. 4 and 5 are transverse sectional views taken through the body ofthe machine 011 the line 4-4, Fig. 2, and as seen looking from the right toward the left in the direction of the arrows, Fig. 4 illustrating the location of the operative parts during the process of the forming of a staple, and Fig. 5 the position of the same parts after the staple has been formed and just preparatory to driving it through the material to be bound. Fig. 6 is a sectional view taken through the body of the machine on the broken line 66,

Fig. 2, and as seen looking from the right toward the left of the drawings. Fig. 7 is a horizontal sectional view taken through Fig. 4 on the broken line 77 and as seen looking from the top toward the bottom of the drawings. Fig. 8 is a plan view of the staple clinching anvil.

Referring now to the drawings in detail in all of which like letters of reference represent like parts wherever used, 13 represents the base of the machine preferably cast of a single piece of material and provided with a hinged bail wire E whichmay be folded up into the hollow portion of the base as shown in dotted lines, or turned to the position shown in full lines, its function being to give the machine greater base support without tilting when the operative portions are lifted by hand into the position shown in dotted lines, a

Fig. 1.

B is a standardcast integral withthe base IOO forming wire W, said spool being provided with a retaining groove oropening extending across one end and adapted to receive frietionally a metal cross piece V which is socured through the medium of a bolt V, set nut V and spiral regulating spring S directly to an arm V said arm being in turn adjustably secured to the standard B by aserew 1;, see Figs. 2 and 6. The outer end of the arm F is of a hollow cylindrical nature and acts as a guide-way and support for the staple forming and staple driving plungersp p and their accessory parts, the plunger 19 being in turn hollow as shown at I and admitting of vertical movement of the staple driving plunger 19 through the agency of the operating handle 11 and head 72. which rests normally upon a strong spiral spring S supported in turn by a collar on the upper end of the staple driving plunger 19' said spring acting as a yielding connection between the two plungers. The staple forming plunger is sustained at one side by a pin which rests upon a second strong spiral spring S coiled around a pin T secured in an opening parallel with the operating handle H, s being a set screw for limiting the upward movement of the two plungers p 19' and their attached parts under the stress of the spring S To the upper end of the staple forming plunger 1) atf' f is secured a pair of pivoted links or arms ff, the free ends of which are adapted to be forced downward by a shoulder upon the operating handle H, said arms or links having vertical movement between a pair of curved arms F Feast integral with the outer extension of the arm F. These parts last described are not materially different from the corresponding parts described in my prior patent above referred to.

To the lower end of the staple driving plunger 1) is secured,by a pin,a guide block 12 which is grooved on its lower face, its ends extending laterally into vertically disposed grooved guide-ways in the inner face of the staple forming plunger 1), and on opposite sides of the lower face of the staple forming plunger are ridges or elevations g g forming between them a groove g which, under the normal conditions seen in Figs. 1 and 3, constitute in conjunction with the groove in the block 19 a guide-way across the face of the two plungers, said joint grooves being in alignment with a pair of tubular guide-ways k secured in opposite sides of the hollow guide-way for the plungers J p, g being a tubular extension of the tube t adapted to receive the staple forming wire W and guide it into the machine all as clearly shown in Figs. 1 and 3. i

C is the staple forming mandrel which has horizontal movement in a lateral extension of the part F and rests normally with its outer divided end 0' in the path of the staple forming and staple driving plungers, said mandrel having a guiding groove 0 in its upper surface in which plays a pin 0' extending downward through the part F. To the outer end of this staple forming mandrel is secured a screw 3 around which is coiled a spiral spring S one end of which bears against the mandrel and the other against a removable cap f held in place by screws .9 .9 the function of the spiral spring being to maintain the staple forming mandrel in its outer position as shown in Fig. 4.

p is a pin carried at the lower end of the staple forming mandrel p and adapted to have frictional bearing upon the inclined end of the staple forming mandrel so that when itis forced downward it will pass between the divided ends 0 of the mandrel, see Figs. 5 and 7.

A represents the anvil which is preferably of steel and is secured to the base Bby screws 1) b and dowel pins a a extending from the under side upward. In the upper side of this anvil is a clinching groove a located in the plane of the direction of movement of the staple forming wire, see Figs. 1 and 8.

r is a ratchet wheel provided, in the present instance, with five ratchet teeth at sufficient distances apart to feed the staple forming wire forward the required amount for each complete movement of the mechanism when it is tilted from the position shown in full lines to that shown in dotted lines in Fig. l, P being a propelling pawl carried by the arm F, and d a holding pawl for preventing backward movement of the ratchet wheel on restoring the apparatus to the position shown in full lines.

0' is a milled feeding wheel secured to the ratchet wheelr and both journaled upon the screw 8.

r is a milled frictional feeding wheel of smaller diameter and carried by a lever R pivoted to the frame at one end and provided at the other end with a yielding adjustable spring for limiting the pressure upon the wire Wbetween the two feed wheels r and r 8 p is a back stop carried by the arm F,its function being to limit the backward movement of the arm and operating handle II by coming in contact with the rear face of the standard 13 as shown in dotted lines in Fig. 1.

The operation of the apparatus is as follows: The handle H and arm F are first lifted into the position shown in dotted lines in Fig. 1. In doing this the pawl P imparts to the ratchet wheel r and hence to the milled feed wheel 0' one-fifth of a revolution thereby causing the wire W to be fed forward ICC through the tube 9 and guide channel g into the position shown in Fig. 1 at the same instant the holding pawl d fell into the next ratchet tooth in advance. The material to be bound is now placed upon the anvil A, and the handle 11 and part F restored to the position shown in full lines in Fig. 1; the handle II is then struck a sharp blow. During the downward movement of the parts they first assn me the position shown in Fig. 4 with the shoulder of the handle I-I resting upon the ends of the pivoted links or arms h h thereby causing the staple forming plunger 1) to be driven forward into the position shown in Fig. 5. The sharp cutting edge of the staple forming mandrel 19 next to the guide tube therefore cuts off the exposed portion of wire and simultaneously the other side of the staple forming mandrel cuts off any portion of wire which may have been forced into the right hand guide tube It, see Fig. 1. the free end 0 of the staple forming mandrel and this mandrel, as the handle advances, is caused to retreat through the agency of the pin 29 acting upon the inclined face of the mandrel between the divided ends 0' thereof as clearly shown in Fig. 5. The downward motion continues therefore, the part h ultimately coming into mechanical contact with the staple driving plunger 1) as the spring S is compressed and finally driving the staple home through the material and clinching it in the clinching groove a. On releasing the handle H the parts are restored to their normal positions through the agency of the springs S and S and the staple forming mandrel 0 again returns to its normal position under the stress of the spring S The material may now be removed and additional binding staples inserted at various parts as desired. When the supply of wire W is exhausted the spool S is simply removed from the frictional support V by sliding it to one side and a similar spool with a new supply ofwire is substituted instead, such an'arrangement forming a simple and efficient means for attachingthe wire supply. The tension put upon the wire supply spool by the feeding apparatus is regulated by the set screw V and spiral regulating spring 8, the arrangement being such as is apparent on inspection of Fig. 6 that increased pressure upon the spiral regulating spring S will increase the friction between the spool support and the supporting arm V I do not limit myself tothe special details of construction herein shown and described as many of the features may be materially departed from and still come within the scope of my claims hereinafter made. To make a single illustration, in place of the friction plate V and the groove in the spool head S I may substitute a spool having a hole bored through the head thereon and a pin adapted to fit in said hole and through a corresponding hole in the rod V, such an arrangement The staple is then formed around may be removed from over the material being bound and the staple forming wire afterward fed forward for forming a new staple.

2. A paper binding machine comprising two plungers yieldingly connected together over a stationary anvil, said parts being arranged for forming, driving and clinching wire staples through the material to be bound in combination with wire feeding mechanism; the binding mechanism being pivotally supported over the material to be bound and provided with pawl mechanism operatively connected to ratchet wire feeding mechanism fixedly secured to the same base with the binding mechanism.

3. In a paper binding machine staple forming and staple driving plungers yieldingly connected together, a staple forming mandrel located in the path-of said plungers, said mandrel being provided with an inclined face and one of the plungers with a pin adapted to come into contact with said inclined face as the plungers are driven downward, in combination with 'wire feeding mechanism secured to the same base and operatively connected through ratchet and pawl mechanism with the pivoted parts of the apparatus.

4. In apaper binding machineastaple forming plunger and a staple forming mandrel the latter having an inclined face, in combination with a staple driving plunger and a pin carried by the staple forming plunger for forcing the mandrel aside after the staple is formed the staple forming and staple driving plungers being located the one within the other and yieldingly connected together.

7 5. A paper binding machine having staple forming and staple driving plungers yieldingly connected together and provided with a continuous groove or channel in their lower faces said groove or channel being located in alignment with tubular guide-ways on opposite sides in combination with means for feeding wire under the plungers.

6. A paper binding machine having staple forming and staple driving plungers yieldingly connected together and a staple forming mandrel located in the downward path of said plungers, in combination with tubular wire guide-ways on opposite sides of the plungers, the staple forming plunger beingprovided with means for cutting the wire into staple blanks.

7. In a paper binding machine staple forming and staple driving plungers yieldingly connected together, a staple forming man drel located in the path of the plungers, all of said parts being pivotally supported on a base over the material to be bound, a spool of feeding mechanism and a wire holding spool provided with a retaining groove in one head, in combination with a frictional support and means for regulating the tension put upon the wire in feeding it forward.

9. In a paper binding machine awire holding spool having a groove or opening through one of its heads, a frictional support resting in the groove and attached to a fixed arm,in combination with means for regulating the frictional bearing between the spool and its supporting arm.

10. A wire holding spool having a groove or opening through one head and a rod or pin fitted therein, in combination with a sustaining bolt, a set nut and regulating spring, substantially as described.

11. A paper binding machine consisting of a staple forming plunger surrounding a staple driving plunger, said plungers being yieldingly connected together and yicldingly supported in turn by an arm hinged to a base in combination with an anvil secured to the base, substantially as described.

12. A paper binding machine having staple forming and staple driving plungers located, one within the other and yieldingly connected together, both of: said plungers being in turn yieldingly sustained by an arm pivotally secured to a base, in combination with aclinching anvil attached to the base, and wire feeding mechanism operatively connected with the base and the pivoted portion, substantially as described.

In testimony whereof I have hereunto subscribed my name this 28th day of December, 1893.

EDWIN T. GREENFIELD.

\Vitnesses:

G. J. KINTNER, M. M. ROBINSON.

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