US1644283A

US1644283A - Apparatus for manufacturing rail anchors

Info

Publication number: US1644283A
Application number: US740593A
Authority: US
Inventors: Laurence A Schneider
Original assignee: Canton Forge & Axle Co
Current assignee: Canton Forge & Axle Co
Priority date: 1924-09-29
Filing date: 1924-09-29
Publication date: 1927-10-04
Anticipated expiration: 1944-10-04

Description

4 192 1,644,283 Oct 7 L. A. SCHNEIDER APPARATUS FOR MANUFACTURING RAIL ANCHOHS Filed Sept, 29, 1924 5 Sheet s-Sheet 1 I T I l I l ll FIIII 1,644,283 1927' L. A. SCHNEIDER APPARATUS FOR MANUFACTURING RAIL ANCHORS Filed Sept. 29, 1924 5 Sheets-Sheet 2 1,644,283 1927' A. SCHNEIDER APPARATUS FOR MANUFACTURING RAIL ANCHORS Filed Sept, 29. 1924 5 Sheets-Sheet 3 1 O Oct 927 A. SCHNEIDER APPARATUS FOR MANUFACTURING RAIL ANCHORS Filed Sept, 29, 1924 5 Sheets-Sheet 4 1,644,283 1927' L. A. SCHNEIDER APPARATUS FOR MANUFACTURING RAIL ANCHORS Filed Sept. 29, 1924 5 Sheeis-Sheet 5 orne Patented Oct. 4, 1927.

UNITED STATES PATENT OFFICE.

LAURENCE A. SCHNEIDER, F CANTON, OHIO, AssICNoB T0 CANTON FORGE ai AXLE COMPANY, OF CANTON, OHIO, A CORPORATION OF DELAWARE. q

APPARATUS FOR MANUFACTURING RAIL ANCHORS.

Application filed September 29, 1924. Serial No. 740,593.

My invention relates to apparatus for manufacturing rail anchors of sheet metal. The primary object of the invention is to provide a new and improved apparatus for manufacturing devices of the above character, whereby the rail gripping jaws and the interlocking portions of the anchor members may he made with a high degree of accuracy by bending metal blanks to the desired configuration, and whereby the bending of said blanks, even though the portions bent be relatively short, may be effected with a minimum stretch of metal.

A further object is to provide new and improved constructions, arrangements and devices in an apparatus hereinafter described andclaimed for carrying out the above stated object and for accomplishing such other objects as will appear from a tie scription of the invention SllOWlill'l the annexed drawings.

In the drawings,

Fig. 1 is a plan view of a portion of a Fallroad rail and cross tie showing one form of rail anchor that may be formed with my improved apparatus Fig. 2 is a face view of the rail anchor shown in Fig. 1, the base portion of the rail being shown in section;

Fig. 3 is a view in perspective of one of the rail anchor members;

Fig. 4 is a view in perspective of another rail anchor member adapted to have an interlocking engagement with the member shown in Fig. 3;

Fig. 5 is a front view in elevation of my preferred form of apparatus used in connection with the manufacture of the rail anchor members shown in Figs. 3 and 4;

Fig. 6 is a plan view of the base portion of the machine; I

Fig. '7 is a fragmentary view in elevation showing the die sections employed in connection with certain bending operations in the manufacture of the member shown in Fig. 3;

Fig. 7 is a plan view of a sheet metal blank from which the member shown in Fig. 3 is formed;

Figs. 8 and 9 are side views in elevation showing the dies and associated parts of the apparatus used in connection with the finishing operations of the member shown in Fig. 3;

Fig. 10 is a view in perspective of a sheet metal blank from which the anchor member shown in Fig. 4. is formed, a portion of the blank being illustrated in this figure as being bent to a position to provide a tie abutment for the anchor;

Figs. 11 and 12 are views in elevation of the blank and the die sections employed for forming certain bends in the blank; and

Figs. 13 and 14 are views in elevation showing the dies and associated mechanism of the apparatus for performing the finishmg operation in connection with the manufacture of the anchor member shown in Fig. 4.

1y improved apparatus, to be hereinafter described, is particularly suitable for use in the manufacture of a sheet metal anchor of the two piece type shown in Figs. 1 to 4 inclusive of the drawings, but may, obviously, be used in connection with the manufacture of other types of anchors where similar conditions are present. The rail anchor illustrated in the drawings is a device consisting of two jaw members l0 and 11 which grip opposite edges of the rail base 13 and have a wedging interlocking engagement with each other at a point beneath the base of the rail. The member 10 of the anchor is formed at one end with a jaw portion 14 adapted to grip one edge of the rail base, which jaw portion is so formed as to provide

recesses

15 and 16 to provide clearance for the upper and lower corners of the rail base, and thereby insure a firm bearing engagement of the jaw 14 and the body portion of the member with the upper and lower surfaces respectively of the rail base. The other end of the anchor is bent to provide a channel shaped portion 17, the upstanding flange 18 of which is relatively low and extends at an angle to the longitudinal center of the rail so as to function as a wedge when the same is interlocked with the mating member 11. The flange 18 is preferably bent inwardly so as to stand at an angle to the vertical, so as to provide a hook-shaped configuration. At a point intermediate the jaw and said channel shaped portion, a projection is bent downwardly to provide an abutment 19 adapted to bear against a vertical face of the cross tie 20.

The member 11 is formed from a sheet surface of the rail base.

metal blank of the configuration shown in Fig. 7, bent to provide a jaw portion for engaging the opposite edge of the rail. The jaw portion of this member, like the jaw port-ion of member 10, is provided with

recesses

22 and 23 to provide clearance for the upper and lower corners of this edge of the rail base and therebj insures a firm contact,of the jaw 21 and t 1e body of the" member with the upper and lower surfaces of the rail base at a point within the edges of the base. The extremity of the jaw 21 is also preferably curved upwardly, as shown at 24. The other end of the member 11 is formed with a downturned flange 25 of substantially the same height as the flange 18 and extends at an angle to the longitudinal axis of the rail so as to cooperate with the wedging surface of the flange 18. The flange 25 is also inclined vertically so that. the

flanges

18 and 25 will provide an interlocking engagement to prevent the channel shaped portion of the member 10 from moving downward with relation to the under The member 11 is preferably made of slightly thicker material than the member 10 so as to provide a relatively thick portion or striking surface to receive the hammer blows during the application of the anchor to a rail.

The anchor is applied to the rail by hooking the jaws of the

members

10 and 11 over opposite edges of the rail base. The member 11 is then driven longitudinally of the rail so that the angularly disposed

flanges

18 and 25 of the members will effect a firm wedging engagement with each other and thereby produce a tight gripping action of the

jaws

14 and 21 upon the opposite edges of the rail base.

In Figs. 5, 6, 7, 8, and 9, I have shown my improved apparatus, including the die sections and cooperating mechanism adapted for use in connection with the manufacture of the rail anchor member 11. The apparatus illustrated consists of a base 26 formed with upstanding guide members 27. A crank shaft 28 is journaled in bearings 29 at the upper end of the guides 27 and is connected by means of a connecting rod 30 to a reciprocating head 31. The head 31 operates between the guides 27 and carries on its lower

surface die sections

32 and 33 which sections cooperate with die sections 32-33' secured to the base to bend the blank 34 (Fig. 7) to the desired configuration. The operation of the reciprocating head 31 is controlled by a treadle clutch mechanism 28".

After the blank 34 is heated to a suitable bending temperature, it is bent to the configuration shown in Fig. 7 by means of the die sections 32-32 The final bending operations to which the blank is subjected are accomplished by means of the die sections 33--33 and the mechanism associated therewith, to be hereinafter described. The

die sections

32 and 33, it will bev observed, are carried on a single reciprocating head, so that two blanks may be operated upon simultaneously, that is to say, that the initial bending of one blank and the finishing operations on another are performed simul-' taneously so that one completed anchor men1- ber may be made for each working stroke of the machine.

The die sections 3232 are formed with oppositely disposed surfaces 35-35 which, when the die sections are brought together, bend the blank to its initial or partially formed contour as shown in Fig. 7 of the drawin s. The point 36 of the die section 32 is of such configuration as to form the clearance recess 23 of the member 11 shown in Figs. 2 and 3. During the initial bending operation the end 37 of the blank is bent over the rib 38 of the die section 32 and pressed firmly against its side 39 so as to form the inclined flange 25 of the anchor member. The curved surface 40 of the die section 32 is so proportioned as to insure the pressing of the end- 37 of the blank firmly against the surface 39 of the die section 32 and thereby insure a uniform inclination of the flange 25 of the finished member. The rib 38 of die section 32 is so disposed that the bending of the end 37 of the blank will be effected as previously mentioned, along a line parallel to the diagonal edge 41 of the blank. Reference numeral 42 designates a stop member against which the blank 34 is positioned so as to insure the proper positioning of the blank on the die section 32. The proper position of the blank is indicated in dotted lines in Fig. 7.

After the blank is bent to the configuration shown in Fig. 7, it is positioned as shown in Fig. 8, upon the anvil 43 of the die section 33 and held firmly on the anvil during the finishing operations by means of a dog 44. The dog 44 is formed at one end with an angular portion 45 corresponding to the configuration of the flanged end portions of the partially formed flange and is pivoted at the other end by a pin 46 to the die section 33. The dog is normally held in elevated position by means of a spring 47 and is moved to a blank holding position by means of a'cam member 48 which projects downwardly from the die section 33 so as to engage the corner 49 of the dog. The angular end of the dog 44 is pressed against the blank by means of a spring plunger 50 carried by the die section 33 and is held in such position by means of such spring plunger and the engagement of the flat surface 50 of the dog with the surface 51 of the cam member 48.

The end of the anvil 43 is formed with an enlargement, one portion 52 of which fits Inn tit)

into the recess 23 formed in the blank by the end 36 of the die 32. The other portion of said enlargement forms the clearance recess 22 of the anchor member when the end 51 of the blank is bent to 1ts completed form. The end 51 of the blank is bent around the die -13 by means of an arm 55 pivoted at 56 to the die section 33 and formed at the other end with a rounded portion 57 which engages the blank. The arm 55 is guided between camways 58 ot the die section 33 and is provided with rollers 59 which roll upon the cam surfaces 58 when the die section 33 is moved from the position shown in Fig. 8 to the position shown in Fig. 9.

The finished anchor member is removed from the anvil by means of a kick-off mechanism consisting of a slide 60 normally held in its inoperative position by means of a spring 61. The slide 60 has a sliding connection 62 with a pivoted dog 63 adapted to be rocked to move the slide toward the anvil when the reci 'n-ocating head 31 of the machine approaches its extreme upper position. The rocking movement of the dog 68 is effected by means of an arm 64 pivoted to the head 31 so as to pass over the dog 63 during the downward stroke of the head 31, but which engages with the dog 63 and rocks the same when the head approaches the limit of its upward stroke.

lVhen manufacturing the member 10 of the rail anchor illustrated herein, a blank 65 of the configuration shown in Fig. 10.1s sheared from a metal sheet of the desired thickness, the end 66 of the blank being sheared on a diagonal line and the blank being provided along its longitudinal edge 67 with a portion 68. The blank is heated to a suitable bending temperature and is subjected while it is hot to a plurality of bending operations, all bending operations being preferably completed with a single heatin; of the blank. The first of the bending operations consists in bending the portion 68 to a right angle with respect to the body portion, so as to provide the tie abutment 19 of the anchor, shown best in Fig. 2 of the drawings. The next of the bending operations consists in offsetting the body portion of the blank laterally and bending one end thereof upwardly to the configuration shown in dotted lines in Fig. 11. The diagonal end 66 of the blank is then bent upwardly and outwardly so as to partially form a channel shaped portion 17 of the anchor. The next and final bending operation consists in bending the end 66 of the blank to its finished position, so as to provide the inclined flange of the anchor member, and the bending of the upstanding portion 69 at the other end of the blank to provide the rail engaglng aw 14 of the anchor member.

The portion 68 of the blank may be bent to the position shown in Fig. 10 by any suitable means, for example, by means of suitable die sections secured to the machine in the manner disclosed in connection with the manufacture of the member 11, of the anchor. The other bending operations above mentioned are performed preferably by means of die sections 7070, 71-71, and 7272. The

upper die sections

70, 71, and 72. are secured to the reciprocating head 31 of the machine, and the lower die sections 70", 71, and 72" are secured to the base of the machine in substantially the same manner as that shown in connection with the the sections employed in the manufacture of the member 11 of the anchor.

The die sections 7070 are formed with cooperating faces of substantially the contour shown in Fig. 11. The liank is supported in a diagonal position on the shoulders 73 and 74 of the die section 7O with the diagonal edge 66 of the blank resting on the diagonal face 7 5 of the die section. The blank is then pressed between the die sections to offset the body portion of the blank laterally and bend the end 69 thereof upwardly, substantially as shown in the dotted lines in Fig. 11. The bent blank is then positioned upon the die section 71, in which position the end 66 of the blank rests on a curved shoulder 76 of the die section 71, and the bend 78 at the other end of the blank rests upon the curved surface -79 of said die section. The die section 71 is provided with a projection 80 which, when the section 71 is moved downward, engages the angular portions 81-82 of the blank and presses them into a recess 83 of the die section 71 to partially form the channel shaped portion 17 of the anchor member. When the die section 71 reaches the limit of its downward movement, it presses the blank firmly against the walls of the recess 83 and against the surface 84 of the die section 71*. The projection 80 and the recess 83 taper in width so as to form the bend 85 of the blank on a line parallel to the diagonal edge 66, thereby forming the upstanding flange of the anchor of uniform height throughout. The other bends in the body portion are preferably formed on lines perpendicular to the longitudinal edges of the blank. The blank is then placed in an inverted position on an anvil portion 86 of the die section 7 2*. The. anvil 86 is formed at one end with a portion 87 corresponding in contour to the inner wall of the channel shaped portion 17 of the finished anchor member, and is formed at the other end with curved portions corresponding substantially to the contour of the jaw end of the anchor member. The end 66 of the blank is bent inwardly and pressed firmly against the wall 88 of the anvil by means of a dog 89 pivoted at its lower end to the die section 72 by a bolt 90 and formed on its inner face with a recess 91 of such contour as to bear against the entire outer surface of member 94 carried by die section 72. The

member 94 is provided with a cam surface 95 which bears against the dog to swing 1t inwardly when the die section 72 moves downwardly from the position shown in Fig.

13 to the position shown in Fig. 14 When the dog 89 is moved to the limit or its working stroke, it is held in such position during the subsequent bending of the blank by means of an engagement of the rear face 96 of the dog with a vertical inner face 97 of the cam member 94.

T he end 69 of the blank is bent around the end 98 of the anvil to provide the jaw portion 14 of the finished anchor member. This end of the anvil is formed with beads 98' and 99 which provide for the forming of the clearance recesses 15 and 16, respectively, of the anchor member. The bending of the end 69 of the blank is accomplished by means of a pivoted arm 100 carried by the upper die section 72 and formed at its lower end with a rounded angularly disposed portion 101, which engages the end 69 of the blank. The lower end of the arm 100 is provided on opposite sides with rollers 102, which bear on curved cam surfaces 103 of the die secblank to provide the tie a utment and also the die sections for performing the other bending operations may all be suitably arranged on one machine, grooves for the attachment of the dies being shown in the base and in the head 31 of the machine in Fig. 5, so that the several bending operations may be performed on different blanks during the same stroke of the reciprocating head 31 of the machine, thereby making it posslble to finish one complete member of the anchor for each operating stroke of the machine, thereby permitting, by the close arrangement of the die sections, the shifting of the several blanks from one die section to another with a minimum length of time so that the blanks when subjected to the final bending operation, will be of sufliciently high temperature to insure that these final bending operations will be made with a high degree of accuracy.

While 1 have described my invention in connection with dies suitable for use in the manufacture of one type of rail anchor, it will be understood that I contemplate all modifications in structure that come within the scope of the appended claims.

I claim:

1. An apparatus of the character described, comprising a die section adapted to receive a metal blank, a member pivoted to move into engagement with the blank to hold the same on said die section, a reciprocating member provided with means for moving said pivoted member into engagement with said blank, means on said reciprocating member for exerting pressure against said blank, and a pivoted element on said reciprocating member for engaging an end of said blank 3o bend the same around a portion of said 2. An apparatus of the character described, comprising a die section adapted to receive .a metal blank, a member pivoted to move into engagement with the blank to hold the same on said die section, a reciprocating member provided with a cam element for moving said pivoted member into engagement with said blank, means on said reciprocating member for exerting pressure against said blank, and a pivoted element on said reciprocating member for engaging an end of said blank to bend the same around a portion of said die.

3. An apparatus of the character described, comprisin a die section adapted to receive a metal blank, a member pivoted to move into engagement with the blank to hold the same on said die section, a reciprocating member provided with a cam element; for moving said pivoted member into engagement with said blank and for holding said member in operative engagement there with, means on said reciprocatin member for exerting pressure against said lank, and a pivoted element on said reciprocating member for engaging an end of said blank to bend the same around a portion of said die.

4. An apparatus of the character described, comprising a die section adapted to receive a metal blank, a member pivoted to move into engagement with the blank to hold the same on said die section, a reciprocating member provided with means for moving said pivoted member into engage ment with said blank, means resiliently yieldable on said reciprocating member for exerting pressure against said blank, and a pivoted element on said reciprocating member for engaging an end of said blank to bend the same around a portion of said die.

5. An apparatus of the character described, comprising a die section adapted to l receive a metal blank, a member pivoted to move into engagement with the blank to hold the same on said die section, a rcc1prorating member provided with means tor moving said pivoted member into engagement with said blank, means resiliently yieldable. on said reciprocating member and adapted to bear upon said pivoted member for exerting ressure against sa1d blank, and a pivoted e ement on sa1d reciprocatmg member for engaging an end of said blank to bend the same around a portion of sa1d die.

6. Apparatus of the character descrlbed, comprising a stationary die member adapted to receive a metal blank, a member plvoted to move into engagement with said blank, cam mechanism for actuating said pivoted member, a pressure member adapted to bear against said pivoted member, and a p1voted dog adapted to engage one end of the blank to bend the same around a portion of said die.

7. Apparatus of the character described, comprising a stationary the member adapted to receive a metal blank of angular configuration, a member pivoted to said die member and adapted to move into engagement w th said blank, cam mechanism for actuating said pivoted member, a pressure member adapted to bear against said pivoted member, and a pivoted dog adapted to engage one end of the blank to bend the same around a portion of said die.

8. Apparatus of the character described, comprising astationary die member adapted to receive a metal blank of angular configuration, a member pivoted to said die member and adapted to engage one end of the blank to bend it against the die member, cam mechanism for actuating said pivoted member, a pressure member adapted to bear against said pivoted member, and a pivoted dog adapted to engage the other end of the blank to bend the same around a portion of said die.

9. Apparatus of the character described, comprising a stationary die member adapted to receive a metal blank, a pivoted member secured to said stationary die and adapted to move into engagement with one end of said blank to bend the same around a portion of said die member. a reciprocating cam member formed with an angular surface adapted to move said pivoted member into engagement with the blank and formed with a vertical face for engaging said pivoted member and holding it in its operative position, a pressure member adapted to bear against said pivoted member, and a pivoted dog adapted to engage the other end of said blank to bend the same around a portion of said die.

10. An apparatus of the character described, comprising a stationary die member adapted to receive a metal blank, a member pivoted at one end to said die member and formed at the other end with a blank pressing surface corresponding in contour to a portion of said blank, a reciprocating member provided with a cam element adapted to move said pivoted member to its blank pressing position, means on said reciprocating member for engaging one end of the blank to bend it around the die.

11. Apparatus of the character described, comprising a stationary die member adapted to receive a metal blank. :1 member pivoted at one end to said die member and formed at the other end with a blank pressing surface corresponding in contour to a portion of said blank, a reciprocating member provided with a cam element adapted to move said pivoted member to its blank pressing position, and means comprising a pivoted arm on said reciprocating member for engaging one end of the blank to bend it around the die.

12. Apparatus of the character described, comprising a stationary die member adapted to receive a metal blank, a member pivoted at one end to said die member and formed at its other end with a blank engaging surface, a reciprocating member adapted to exert pressure against said blank and provided with a cam element adapted to move said pivoted element into its blank engaging position, and means comprising a pivoted arm on said reciprocating member for engaging one end of the blank to bend it around a portion of said die.

13. Apparatus of the character described, comprising a stationary die member adapted to receive a metal blank, a member pivoted at one end to said die member adapted to be moved into engagement with said blank, a reciprocating member provided with a cam element adapted to move said pivoted member to its blank engaging position, means comprising a pivoted arm on said reciproeating member for engaging one end of the blank to bend it around a portion of the die, and means on said stationary die for guiding the lower end of said pivoted arm in a curved path.

14. Apparatus of the character described. comprising a stationary die member adapted to receive a metal blank. a member pivoted at one end to said die member and adapted to be moved into engagement with said blank, a reciprocating member provided with a cam element adapted to move said pivoted member to its blank engaging position, means comprising a pivoted arm on said reciprocating member for en aging one end of the blank to bend it aroun a portion of said die; said stationary die being provided with a cam surface for guiding the lower end of said arm in a curved path.

15. Apparatus of the character described comprising a stationary die member adapted i to receive a metal blank, a member pivoted atone end adapted to engage a portion of said blank to press the same firmly against the die, a reciprocating member provided with a cam adapted to move said pivoted member to its blank engaging position and to hold the same in said position, means comvided with cam surfaces for said rollers and adapted to guide the lower end of said arm in a curved path.

16. Apparatus of the character described comprislng a stationary die member adapted to receive a metal blank, a member pivoted at one end adapted to be moved into engagement with said blank to hold the same in position on said die, a reciprocating member for moving said pivoted member into engagement with said blank, an arm pivoted at its upper end to said reciprocating member and adapted to engage at its lower end a portion of said blank to bend it around a portion of the die, the said die member being provided with a curved cam surface and the lower end of said arm being provided with means engaging said cam surface of the die whereby said lower end ofsaid arm is guided in a curved path.

17. Apparatus of the character described, comprising a stationary die member adapted to receive a metal blank, a member pivoted at one end ada ted to be moved into engagement with sai blank to bend a portion of the blank against the die and to hold the same in position on said die, a spring for normally holding said pivoted member in its inoperative position, a reciprocating member for moving said pivoted member into engagement with said blank, an arm pivoted at its upper end to said reciprocating member and adapted to engage at its lower end a portion of said blank to bend it around a portion of the die, the die member bein provided with acurved cam surface an the lower end of said arm being provided with means engaging said cam surface of the die, whereby said lower end of said arm is guided in acurved path.

18. Apparatus of the character described, comprislng a stationary die member adapted to receive a metal blank, a member pivoted at one end adapted to be moved into engagement with said blank to bend a portion of the blank against 'the die and to hold the same in position thereon, a spring for normally holding said pivoted member in its inoperative position, a reciprocating member for moving said pivoted member into engagement with said blank, means carried by said reciprocating member for pressing the blank against the upper face of said die, an arm pivoted at its upper end to said reciprocating member and adapted to engage at its lower end a portion of said blank to bend it around said die, thevsaid die member being provided with a curved cam surface and the lower end of said armbeing provided with means engaging said cam surface of the die, whereby said lower end of said arm is guided in a curved path.

19. Apparatus of the character described, comprislng a stationary die member provided with a beaded end portion and adapted to receive a metal blank, a member pivoted at one end adapted to be moved into engagement with said blank to bend a portion of the blank against the die and to hold the same in position on said die, a reciprocating member for moving said pivoted member into engagement with said blank, means carried by the reciprocating member for pressing the blank against the upper face of the die, an arm pivoted at its upper end to said reciprocating member and adapt ed to engage at its lower end a portion of said blank to bend the same around the beaded portion of said die, the said die member being provided with a curved cam surface and the lower end of said arm being provided with means engaging said cam surface of the die whereby said lower end of said arm is. guided in a curved path.

20. In apparatus of the character described, the combination with a base portion, of a reciprocating head, separable die sections secured to said base and head respectively and adapted to exert pressure on metal blanks to form preliminary bends therein, a finishing die including means for performing the final bending operation, and mechanism for removing the work from the finishing die comprising a slide formed with projections adapted to extend over a portion of said finishing die, a pivoted dog having a sliding connection with said slide, and means carried by said head and adapted to engage said dog to rock the same when the said reciprocating head approaches its inoperative position.

LAURENCE A. SCHNEIDER.