US1569879A

US1569879A - Making side frames

Info

Publication number: US1569879A
Application number: US581929A
Authority: US
Inventors: Lindsay C Pritner; Henry C Dorris
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-08-15
Filing date: 1922-08-15
Publication date: 1926-01-19
Anticipated expiration: 1943-01-19

Description

Jan. 19, 1926.

L. c. PRITNER ET AL 'IAKING SIDE FRAIES v Filed August 15, 1922 2 Sheets-Sheet 1 1 1 %ao.cwwfwor Patented Jan. 19, 1926.

I UNITED STATES PATENT" OFFICE.

LINDSAY G. PRITNER AND HENRY C. DORRIS, F J'OHNSTOWN, PENNSYLVANIA.

MAKING SIDE FRAMES.

Application filed August 15, 1922. Serial No. 581,929.

To all whom it may concern;

Be it known that we, LINDSAY O. PRITNER States, and residing in the city of Johnstown, county of Cambria, and State of Pennsylvania, have invented certain new and useful Improvements in MakingSide Frames; and we do hereby declare the following to be full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

Our invention relates to making side frames with particular reference to side frames for railway trucks formed of pressed steel, and has for its objectto materially simplify the fabrication of such side frames from single sheets of steel, with certaln ans cillary reinforcements and additions, involving the cutting of a blank of a shape or contour generally corresponding to the two lateral faces of the side frame, withappropriate openings to define the top and bottom arch bars, to receive the bolsters and column guides, to provide integral pedestal tie bars, and for other specific purposeshereinafter described, die flanging certain of the marginal edges of the blank and of the openings therein, bending the blank transversely of its longitudinal axis to bring the two halves thereof into parallelism, with the marginal flanges in abutting relation, welding the abutting flanges together, and finally weld ingtheadditions and reinforcing elements in place. i g V The invention 15 illustrated in the accompanying draw ngs, 'lIl wh1ch Figure 1 is a plan View of a rectangular plate from which the blank for a pressed metal truck side frame is formed; Figure 2 is a plan View of the cut blankfrom which the pressed metal shape for the truck side frame is made; Figure 3is a central vertical longitudinal sect onal elevation through the blank after it has been flangedyFlgure a1 is a vertical sectional elevation through the bending dies, the partially formed pressed metal truck side frame being shown in end elevation therein at the end of the bending operation; Figure 5 is an end elevation of the pressed metal truck side frame after the blankhasbeen bent into its final; form, but before. the flanges have been welded together; Figure 6 is a side elevation of the iinishd truck side framei after it has been frame without lessening its strength; 9 are welded;Figure 7 is an end elevation of the finished truck side frame shown in Figure and HENRY C. Donnrs, citizens of the United 6; Figure 8 is a vertical transverse sectional elevation through the finished truck side frame, the section being taken on the line VIIIVIII of Figure 6; Figure 9 is a bottom plan View of the finished truck side frame; F1gure'10 is a side elevation showing theend portions of the top and bottom flangmg dies and a portion of the blank with the end of the pedestal tie bar bent down in, the position it assumes before v the flanging operation, and Figure 11 is a top plan view of the end portion of the bottom flanging die just afterthe fianging operation. I

Referring now to thecharacters of reference on the drawings :-1 indicates the plain rectangular plate from which the blank is to bev cut; 2 indicates generally the plate after 1t has been cut to form the blank; 3 are triangular shaped holes with rounded corners between the bolster openings and the ends; 4 are the bolster openings in the tom arch bar and the end portions of the top arch bar; 6 are holes in the central portion of the top arch bar through which the interior journal box boltsare inserted; 7 are holes for welding the reinforcements near the ends of the top arch bar; 8 are the 1 cutout portions of the ends of the top arch bar whichallow the ready insertion of the outer journal box bolts and also lighten the the outer fiat ends of the tie bars of the out out blank; 10 are ears or added extensions to the tie bars to serve in holding the parts inposition while theirinner ends are flanged and outer ends bent as heretofore despribed; 11 are semi-circular holes in the ends of the tie bars and'inthe ends of the top archba-r, member, which, when the parts are bent in their final position, form substantially circular holes for the journal box bolts; 12 are projecting portions of theiflanges which are adapted to" be welded together after the frame is pressed into its final shape; 13 are recesses or indentations between the projections 12-whicl1 form portions which are not to be welded; 14 are the bottom flanged edges of the blank and 15 are the bent ends of the pedestal tie bars after the blankhas been flanged, The internal flanges of the triangular shaped holes 3 are 16,and the internal flanges of the top arch bar member over the bolster openings are 17, and the upper part of the top arch bar member is 18. The complete finished truck side frame is generally indicated as 19 and the finished pedestal tie bar extension portions thereof are 20. The bottom pads 21 of these bars are welded in position, and these pads have central holes therein which register with corresponding holes in the pedestal tie bars to receive the lower ends of the journal box bolts. The bolsterguide pads are 22 and these are welded to the truck frame columns by their edges to maintain them in the locations shown. A reinforcing member 23 of channel section with trapezoidal flanges is neatly fitted within each end of the top arch bar member and welded thereto at the places indicated as 24, including the holes in the sides of the top arch bar member as illustrated. 25 are the welds of the flanges which are thus joined. The holes through which the journal box bolts pass are 26. The former previously referred to for use in shaping the top arch bar member is 27 and this is preferably composed of two wedgeshaped pieces. which, on account of their shape, may be readily withdrawn as desired. As illustrated particularly in Figures 10 and 11, 28 is a part of the bottom fianging die having an inclined end portion 29 and an inclined inner side 30. while 31 is a portion of the top Hanging die co-operating therewith. 32 is a part of the stripper plate used in connection with the top and bottom flanging dies to assist in forming and holding the pedestal tie bar and in the ejection thereof from the bottom die after the flanging has been completed. The top bending die is 36. which is secured in the groove 34 of the holder 33 by means of the bolts while 37 is the bottom bending die provided with the bending groove 38 therein.

The operation of making a side frame is as follows: -A blank rectangular plate 1 is placed upon a pair of cutting dies and at either one or two operations is cut to the form illustrated in Figure 2. After this the cut wblank is preferably heated and placed on a pair of fianging dies and flanged to the form shown in Figure It is then preferably, at the same heat. placed; over abottom bending die 37 in the position shown by dotted lines in Figure 4, and then by the action of the groove 38 in the bottom bending die and the downward movement of the bending die 36. which has the removable former 27 secured to the bottom edge thereof. is bent to the shape illustrated by full lines in Figure 4. The former 27 is then withdrawn, or if desired, may be left in temporarily, and the partially bent shape is then placed between a pair of pressing dies and two halves are closed together to the shape shown in Figure 5. After this is done the adjacent contiguous edges of the projections of the flanges are welded together either electrically or otherwise. Rcinforo ing plates 23 are forcibly pressed into posi tion and welded in the locations shown by the dotted lines in Figure 6. The pedestal tie bar pads 21 are also welded in the positions indicated in Figures (3 and S), the weld ing of these being accomplished around their edges. As particularly illustrated in Figures 10 and 11, the integral projecting portions 10 of the tie bar are so sha )cd and located as to contact with the flanglng dies and hold this part in such a way that the flanging of the inner portion of the tie bar is accomplished. and the shape of the dies is also. such that the out or portions 20 of the pedestal tie bars is bent at right angles to the body portion of the frame and substair tially parallel to and spaced the proper distance from the extending ends of the bottom portion of the top arch bar so as to receive the journal boxes (not shown) thcrcbctwccn.

Although we have shown and described our invcntion in considerable detail. we do not wish to be limited to the exact and spc' cilic details thereof. as shown and described. but may use such modifications. in substitutions for. or equivalent thereof as are cmbraccd within the scope of our invention. or as pointed out in the claims.

Having thus described our invention. what we claim and desire to secure by Letters Patent is:

1. The steps in the method of forming a pressed metal side frame. which consists in taking a plain plate. simultaneously cutting the margins thereof and the openings therein. then dic forn'iing flanges around the margins of certain portions of said plate and certain of the openings therein. then hcnding said plate about its intermediate portion in such a. way as to place the flanges of the two halves substantially opposite each other. and welding the halves together at the flanges.

2. The steps in the method of forming a pressed metal truck side frame, which coir sists in taking a plain plate. simultaneously cutting the margins thereof and the holes therein of one-half thereof at one operation. then turning the plate around and similarly cutting the other half. then forming flanges around certain of the plate margins and certain of the openings. then bending the plate about its intermediate portion until the flanges are adjacent, welding the adjacent edges of the flanges together: said flanges having previously been cut with indentations and projecting portions, which when the plate is bent are at certain and predetermined distances apart.

3. The steps in the method of forming a pressed metal truck side frame. which consists in taking a plain plate, simultaneously plate about its intermediate portion until the flanges are adjacent, said flanges havin previously been cut with indentations and projecting portions, which when the plate is bent are at certain and predetermined distances apart, and then welding together the contiguous projecting parts.

4. The steps in forming a pressed metal truck side frame, which consists in cutting a plate to the outlines desired, including the various openings therein and providing extra extending portions of the pedestal tie bar members thereof, then flanging the plate in a pair of flanging dies adapted to flange certain of the plate margins and the material around the various openings, said flanging dies being provided with portions adapted to contact with the extending portions aforesaid to flange the inner portions of the pedestal tie bars while turning ,the outer flat ends thereof at about right angles to the body of the truck frame, bending the plate about its intermediate portion until the flanges are adjacent, and welding the adjacent edges of the flanges together.

5. The steps in making a pressed metal truck side frame of integral form, consisting in cutting a plain plate to the shape desired with portions which are ultimately to form certain flanges provided with projections, then flanging various portions there of including those provided with the projections aforesaid, then bending the plate about its intermediate portion and placing the projecting portions of each half of the plate opposite each other, and then welding said projections together.

6. The steps in the method of forming a pressed metal truck side frame, which consists in cutting a plain plate to the shape desired, then die forming certain of the margins thereof and of the openings therein, then die bending the plate about its intermediate portion with the aid of a former adapted to contact with said intermediate portion and assist in shaping the top arch bar portion thereof, then withdrawing said former and closing the two halves until the flanges are opposite and at certain predetermined distances apart, and welding the ad jacent edges of the flanges together.

7. The steps in the method of forming a metal truck side frame, which consists in cutting a plate around its margins and to form various openings therein, certain of the margins being provided with projecting portions symmetrically arranged, then die flanging certain of the margins of said plate and the openings thereof, then bending the plate about its intermediate portion and pressing the two halves toward each other in such a way that the projecting portions are opposite each other, and spaced apart, and then welding together said projections.

8. The steps in the method of forming a 'truck side frame, which consists in cutting a plain plate around the margins thereof and to form bolster openings, side openings and end openings therein, while providing projections on certain of the edges thereof and semi-circular openings in other portions, all syn'imetrically arranged, then die flanging certain of the margins, then bending the plate about its intermediate portion and pressing the two halves together, whereby the projections are opposite each other and spaced apart and. the semi-circular openings are opposite each other and adapted to form substantially circular holes in the finished frame, and then welding the projections together. i

9. The method of forming a pressed metal frame, which consists in cutting a plain plate around the margins thereof and with various openings therein and simultaneously providing projectingportions on various margins symmetrically arranged, then die flanging certain of the margins, then bending the plate about its intermediate portions with the aid of a former adapted to assist in shaping the interior of the top arch bar member, then withdrawing said former and pressing the two halves toward each other, then welding the contiguous edges of said projections, then introducing flanged reinforcing members in the ends of the arch bar portion and welding same in place, and welding pads on the column portions to se cure the same together, and to form bolster guides.

In witness whereof we hereunto aflix our signatures.

LINDSAY C. PRITNER. HENRY C. DORE-IS.