US 1309420 A
Description (OCR text may contain errors)
Patented July 8, 1919.
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S-IRON BENDING MACHINE.
APPLICATION FILED OCT. 29, 19]].
THE COLUMBIA PLANOGRAI'H co., WASHINGTON, n. C-
F. J. SCHROEDER.
S-IRON BENDING MACHINE.
APPLICATION FILED OCT. 29,4911.
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S-IRON BENDING MACHINE,
APPLICATION FILED OCT. 29. I917.
1,309,420. 7 Patented J uly 8, 1919.
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if mew! o1, FA NIL J. SCf/fOEDE/i Throw mu F. J. S CHROEDER.
S-IRON BENDING MACHINE APPLICATION FILED OCT. 29, 1917.
Patented July 8, 1919.
6 SHEETS-SHEET 4- gluon Hot J. \Trllfocolf 7Zlaw F. 1. SCHRO EDER.
S-IRON BENDING MACHINE.
APPLICATION FILED OCT. 29, I917.
Pafented July 8, 1919.
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F. J. SCHROEDE'R.
S-IRON BENDiNG MACHINE.
i I APPLICATION FILED OCT. 29,1917. (I 7 1,309,420. v .P t t July 8 6 SHEETSSHEET 6.
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attains THE COLUMBIA PLANDGRAPH cm, WASHINGTON, n. c.
FRANK J. SCHROEDER, GF ALTOONA, PENNSYLVANIA.
Specification of Letters Patent.
Patented July 8, 15119.
Application filed Dctoher 29, 1917.. Serial No. 199,067.
To all whom it may cmwcrn Be it known that I, FRANK J. SCHRQEDER, a citizen of the United States, residing at Altoona, in the countyof Blair and State of Pennsylvania, have invented certain new and useful Improvements in S Iron Bending Machines, of which the following is a specification.
This invention relates to metal bending machines, and more particularly to a device for making a special form of iron which when driven into the end of a railway tie will keep the same from splitting at the end, thus prolonging its life and improving the safety and durability of the road bed.
A primary object of this invention is to provide means for manufacturing tie-end irons that are perfectly formed in the shape of the letter S, andwhich when driven into the end of the tie will perform the function stated.
Another object of this device is to provide means for manufacturing the tie-end irons from strips of material that are adapted to be fed to the forming dies of the apparatus by a novel feeding device which operates in conjunction with a novel shearing device for cutting the material from which the finished pieces are made into uniform lengths prior to its entry into thedie. In this connection, it is proposed to provide improvements on the S-iron bending machine disclosed in my former Patent No. 1,091,5l0 dated March 31, 1914..
lVith these and other objects in view which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts, as will hereinafter be fully pointed out, illustrated and claimed.
It will be readily apparent to those skilled in the art to which this invention belongs, that the same is susceptible to various changes and modifications, without depart ing from the spirit or scope of the invention, but a preferred and practical embodiment of the invention is shown in the accompanying drawin s in which Figure 1 shows the side elevation of the present invention, together with the S forming heads and the material feeding devices in operative position.
Fig. 2 shows the plan view of the parts shown. in Fig. 1.
I Fig. 3 shows an end view of theS iron forming device.
Fig. 4 shows the end view of the device which has positioned thereon the material feeding arrangement.
Fig. 5 shows apartial plan view of the driving mechanism which is not shown in Fig. 2 of the drawings.
Fig. 6 is an enlarged view of the feeding mechanism together with an enlarged view of the 18 iron forming cams around which are caused to move certain cam rollers, each of which is positioned upon a roller bearing, carried in a block which is actuated by a link shown in a plurality of dotted positions it assumes during the process of forming theS iron.
Fig. 7 shows an elevational view of the link shown in position in Fig. 6.
Fig. 8 shows an edge view of the link shown in Fig. 7.
Fig. 9 shows an end view of the gear disk which actuates the link shown in Fig. 7.
Fig. 10 shows a sectional side View of the geardisk shown in Fig. 9.
Fig. 11 shows a plan View of the oscillating finger which is actuated by impinging upon the link in such manner as to operate the material cutting device which will be fully described later.
Fig. 12 shows an edge view of the detail shown in Fig. 11.
.Fig. 13 shows a tumble shaft which is actuated by the oscillating finger shown in Fig. 11.
Fig. 14: shows an end view of the part shown in Fig. 18.
Fig. 15 shows a side elevation of a bar designed to hold the material cutting element, this barbeing actuated by the part shown in Fig. 13 of the drawings.
Fig. 16 shows a plan view of the parts shown in Fig. 15 of the drawings.
Fig. 17 shows a longitudinal view of the main operating shaft which is shown in position inFig. 5 of the drawings.
Fig. 18 shows an end view of the shaft shown in Fig. 17.
Fig. 19 shows a side elevation of the ma terial feeding device support, hich is shown in operative position in Figs. 4 and 6 of the drawings.
Fig. 20 is an edge view of the parts shown in Fig. 19.
.Fig. 21 shows a plan view of the present 8 iron bending machine, showing the manner of driving the same.
Fig. 22 shows a side elevation of the parts shown in Fig. 22 of the drawings.
Fig. 23 shows an end view of the parts shown in Fig. 22 of the drawings.
Fig. 2a shows the manner of making the 8 iron discharging device which is actuated by the main shaft.
Similar reference characters designate corresponding parts throughout the several figures of the drawings.
In carrying out this invention there is provided a base portion designated by the numeral 10, upon which is positioned a frame 11 which is preferably made U shaped, such that the 8 iron forming die designated by the numeral 12, may be placed therein. For the purpose of holding the die block 12 in operative position there is provided a clamping block 13 and a tie bar 1%, as shown in Fig. 1 of the drawings. The die block 12 of the present invention is provided with a plurality of L shaped projecting cams 15 and 16, each of which is made to project beyond the surface of the die block 12 as shown in Fig. 2 of the drawings.
In addition to the projecting cams15 and 16, there is provided in the die block 12 a plurality of L shaped slots 17 and 18 in each of which travel suitable forming rollers 19 and 20 which are adaptedto be held therein by roller pins 21 and 22 that are fitted into movable blocks 23 and 21 designed to move in a carrier 25 which is shown in Fig. 7 of the drawings. The carrier 25 is provided with a plurality of bolt holes 26 through which pass suitable bolts for the purpose of securing the link to a gear disk 27 the teeth 28 of which are designed to mesh with a movable rack gear 29. The rack 29 shown in Fig. 1 of the drawings is moved forward and backward by virtue of a link connection 30 which has'a pin connection with the disk 31, that is adapted to rotate with the main driver shaft 32. The shaft 32 is provided with a pulley 33 which is adapted to receive power from some external source which is necessary to drive the 8 iron forming device.
For the purpose of providing the forming die with a supply of material from which the S irons are made there is provided a material feeding device designated in its entirety by the numeral 3%, and consists essentially of an L-shaped pendent element 35, which is provided with a ledge or table 36 that is adapted to carry the material. Cotiperating with the ledge 36 there is provided a pendent material clamping stirrup or element 37, having a roughened surface 38, as shown in Fig. 6 of the drawings. For the purpose of supporting the element there is provided a rectangular rod 39, which is designed to engage the square opening 40 of the detail 35. Detail 35 is further provided with a journal pin bearing 11, on which is adapted to fit the end 12 of the lever 43 shown fulcrumed at 471 through a pin connection d5 which is adapted to secure the link 43 to a stationary link %6 having a pin connection d7 to the base as of the frame 11 as shown in Fig. 6 of the drawings. The rod 39 is designed to be supported by the frame 11 as shown in Fig. 6. A coiled spring 19 having one end attached to the element 35 is provided for the purpose of drawing the lever 46 back to the position shown after it has been pushed back to its farthest position, shown in dot and dash lines of Fig. 6 of the drawings. For the purpose of pushing the lever as back against the tension of the spring 49, there is provided a pin 50 carrying a roller 51, which is adapted to engage the side 52 of the lever 43. The pin 50 is secured in a disk 53 which is positioned on a journal 51 that is made rotatable through a sprocket wheel 55 and chain 56 which engages a similar sprocket 57 positioned on the main power shaft 32 as shown in Fig- 5 of the drawings. Material from which the 8 irons are made is introduced into the device by an operator who passes the material over the ledge 36, beneath the tooth like surface 38 on the pendent quadrant 37. Having thus introduced the material over the ledge 36 the same passes over a similar ledge 58 beneath a roughened check surface 59 on a pendent check quadrant 60, fulcrumed at 61, and designed to be held in proper operating relation to the ledge 58 by a spring 62 which is adapted to be held secure by the frame 11. The material is then pushed farther through the device passing between the knife 63 and a cutting edge 61, thence between the adjacent legs of the L shaped elements 15 and 16 until the stop 65 is reached. Having thus introduced the material into the S iron bending machine the cutting of the material in the shearing device and bending the iron may be described as follows Rotation of the pulley 33 together with the shaft 32 and disk 31 provide means for causing the rack 31 to be moved backward and forward thus causing the toothed disk 27 to rotate. Rotation of the gear disk 27 causes a similar rotation of the carrier 25. In its rotation the end 66 strikes the projection 67 of the finger F, thus driving the semi-circular arm 68 of said finger downward forcing in its action a similar downward movement of the knife 63, which is held by a knife head 69 shown fulorumed at 70, in Fig. 1 of the drawings. In connection with the finger F it may be noted that the same is mounted on the end of a shaft F j ournaled in one of the arms of the die frame above the shearing device, while the other end of said shaft is fitted with a cam F which has an interlocking engagement with a hook 69 formed on the movable end of the knife carrier member 69.
This downward thrust of the knife 62 cuts the pieces from which the 8 iron is formed, from the main strip of material, while further rotation of the link 2 1 serves to bring the rollers 19 and 20 in contact with the strip of material in the machine Which is to be bent in the shape of an S iron. It will be obvious from Fig. 6 of the drawings that one of these rollers 19 will engage the material at the top while the roller 20 will likewise engage the material at the bottom, forcing one'end down around the end 71 of the L shaped piece 16 while the opposite end is forced upward around the end 72. The 8 iron is thus formed and its discharge from the forming device follows, and may be described thus: Referring to Fig. 24 of the drawings, a rod 73 is designed to pass through the opening 7 1 of the disk 27, the end of which is held normally in line with face of the disk 27 by a helical spring 7 5 the end of which rests upon a shoulder 76 while the opposite end rests against a suitable shoulder 77 of the rod 73. A' bell crank 78 is designed to have a rocking motion about a fulcrum 7 9. The end 80 of the bell crank is attached to a rod 81 which passes through a suitable bearing 82, as shown in Fig. 21 of the drawings. A projection 83 on the collar 84, positioned on the shaft 32 is designed to impinge upon the end 85 of the rod 81 at each revolution of the shaft 32 thus discharging one completed 8 iron at each revolution.
The material from which the S irons are formed having been placed in the bending device by the operator, prior to bending the first 8 iron, and the iron having been bent, the roughened check surface 59 of the pendent check quadrant 60 serves to grip the material in place thus allowing the feeding device to move backward carrying the pendent toothed quadrant 37 back over the material such that when the end of the backward stroke is reached the quadrant 37 immediately grips the material and upon the return stroke the feeding device draws the material from which the succeeding 8 iron is cut, the distance the material is advanced being the distance across the forming dies, from the knife edge 61 to the material stop 65.
The material for the formation of the succeeding S irons is brought into the forming dies as thus explained and the irons are formed as already pointed out.
The 8 iron having been formed in the device the iron is held on the forming dies until it is disch rged from the dies by a discharging rod 86 which is actuated by the lug 83 striking the rod end 85 shown in Fig. 21 of the drawings.
1. In an S-iron bending machine, the combination with a frame, bending means arranged in said frame, and cutting means alsocarried by the latter, of means for ad vancing strip material to the cutting means consisting of a check device carried by the frame adjacent the cutting means, a guide member carried by the frame, a horizontally shiftable feeding stirrup slidable on said guide member, a spring coiled about the guide member and having one end attached to the frame and the other end attached to the shiftable feed stirrup, a pair of pivotally connected levels respectively having their ends pivoted to the frame and to the shiftable stirrup, and a rotary disk having a pin projecting laterally therefrom for engaging with the lever connected with the stirrup.
2. In an S-iron bending machine,the com-- bination with a frame, bending means therein, cutting means adjacent the bending means, and strip feeding means consisting of a check bracket including a horizontal. shelf portion fixed to the frame adjacent the cutting means and a spring pressed check segment, a support projecting from the frame, a horizontally shiftable feeding member, including a horizontal shelf portion and a pivoted gripping cam, slidably mounted on said support, a spring tending to draw the shiftable feed member toward the check bracket, an oscillating arm connected at one end with the shiftable feed member, and means for moving the arm to cause the shiftable memher to move away from the check bracket.
3. An S-iron bending machine including a die frame, a forming die fitted within said frame and including an oscillating formingroller carrier, a shearing device arranged at the feeding-in side of the die and including a shearing member rigidly fitted to one side of the die frame, a movable shear member pivotally supported by the die frame, a shaft for operating said movable shear member and having means at one end for engaging the carrier of the forming die, and means at the opposite end for engaging with said movable shear element.
4. An S-iron bending machine including a die frame, a forming die fitted within said frame, an oscillating carrier arranged at one side of the die, a shearing device located at the feeding-in side of the die and including a stationary shear member and a pivoted shear member, said pivoted shear member having a hook-like element at its movable end, a shaft journaled in said die frame and having a controlling cam at one end, the nose of which is engaged with said hook of the shear member to swing the latter on its pivot, while the opposite end of said shaft carries a member to be engaged by said carrier.
5. An S-iron bending machine including a die frame, a forming die therein, a shearing device located at the feeding-in side of the die, and means for feeding a metal strip to the shearing device including a guide rail carried by one side of said die frame, a check element also carried by the die frame adjacent the entrance end of the shearing device, a reciprocating feeding stirrup slidably mounted on said guide rail, a tension spring having one end connected with the die frame and the other end connected to the stirrup, a link having its lower end pivoted in a fiXed location while its upper end engages the said stirrup, a rotary disk, and a pin projecting laterally from the face of said disk for engaging one side of the said link and adapted to draw the stirrup along the guide rail against the tension of said spring and then permit the spring to pull the stirrup back along the guide rail to feed the metal strips.
6. An S-iron bending machine including a die frame, a forming die therein, a shearing device located at the feeding-in side of the die, and means for feeding a metal strip to said shearing device including a check element carried by the die frame adjacent the entrance end of the shearing device and consisting of a table portion and a spring pressed check cam, a guide rail also carried by the die frame, a stirrup carried by said rail and having a gravity cam adapted to work reversely to said spring pressed cam, a rotary disk, a pin carried by said disk, a link having one end pivoted in a fixed location and its other end pivoted to said stirrup, and a spring having one end connected with the die frame and the other end connected with the stirrup to thereby always maintain one edge of said link against said In testimony whereof I affix my signature in presence of two witnesses.
FRANK J. SCI-IROE'DER.
lVitnesses N. E. GEE, ADAM LEAKE.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. U.