US2475692A

US2475692A - Power press

Info

Publication number: US2475692A
Application number: US698174A
Authority: US
Inventors: Borzym Alexander
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-09-20
Filing date: 1946-09-20
Publication date: 1949-07-12
Anticipated expiration: 1966-07-12

Description

July 12, 1949;

Filed Sept 20, 1946 A.BORZYM .POWER PRESS 4 Sheets-Sheet 1 zzvwzmrozz. Alexander Borzym ATTORNEY A. BORZYM POWER PRESS July 12, 1949.

Filed Sept. 20, 1946 4 Sheets-Sheet 2 INVENTOR. Alexander Borzym 52% ATTORNEY July 12," 1949. A. BORZYM 2,475,692

POWER PRESS Filed Sept. 20, 1946 4 Sheets-Sheet 5 n A x x m 4a ATTORNEY Patented July 12, 1949 UNITED POWER PRESS .n-Alexander Borzym, Dear-born; Mich.

1 Application September 20, 1946," Serial1'NoT698J74 1 invention pertains'toa single action, crank type, press,-- employing one *vertically* movable ram. The press includes certain new features facilitating placement and adjustment of I? dies,

which features will loo-described the coursef Figure 51's a sectional View of amechanism'in the press on-line 5 5 ofliigure' 4;

Figurefi is a sectional viewof a'd'etail of construction on line lifio'f-Figure 4;

Figure? is a-se'ctiona-l View of adetail-of construotiorr online-11 of Figure 3 Figure 8 is a side elevation partly in section of my- =improved presswith ahead member in an outwardlyswung position;

#l igure 9=is an exploded v-iew :of'the clutch mechanism'employedtin the press;

Figure' 10 is a diag-rammatic presentation of a clutuh and: member actua'tingwthe same, i the clutch beingshown -in its 'disengaged position;

liFiglne 11 is a diagrammatic' presentation 'of the-iclutch-and a-mem'ber actuatingthe same, the elutoh being-:shown inlitss engaged' position;

'r if igul i12H-is it a sectional lview= on line 13-43 of Figure 3.

Similar numerals refer to similar parts throughout theiseveralwiews.

=-lDeparting from the'conventionalstructural-design :inuwhich the ram of theapress is driven downwardly towards aflstationary platesupportingvaadieythe ram in mypress wtravelsupwardly towards a normally stationary head having-a die mountedtthereon'ontthe -lower surface thereof.

t' lhe wramgenerallyindicatedby numeral" I 0, is 'madetin the' form of a substantially rectangular-cage,:its-upper=plate I I being suitable for supportpf a diewor dies. At each: corner; the ram is .provided-rrwith two apertures l 2 gone at at top" and =one' 'atbottom; eaohhaving a 'lin-er I=2a= permitting thamounting of ram on two pairs of: guide col- "umns :I 3-:and' Ida which i rise vertically from a bases l 4. The latter is i equipped wlwitlifoot plates -I 5tfor applioati0nof bolts im-order that thepress mi'ght xbeiaffixed to its foundation. The headof theta-press, vindicated by numeral i5; is mounted on-: said iguidewdolumns l3 and l 3m. in? a *manner twhich wilt-bedescribedheneinbelew,

The" press as *shown -by'me is operated by means Dian electrimmotorfl'l, a belt-l8 bein used "to" drive ai fiy wheel I 9. Shaft-2fl of the wheel, rotating in journal boxes '2 l carries a 'pinion 22-which is in mesh with a "gear wheel 23 freely rotating on -ax1e24. *The axle is held in bearings 29; The hub 25pfthe gear wheel; on the side-remote from the fiy whe'el- 9," is slotted radially to' form intervening b1ocks' -2-6. These, as :best ShOWIrlIIFlgUYG-Q, are to interlockwith correspondingly "-located block-s 2'! on: a sleeve- 28 seated on said axle -H; andwhich-is adapted to move slidinglytowards hub portion 25 into an interlocking engagement 0f. -said -blocks' 26 sand 21. It will be understood-that the-sleeve rotates with saxle -M-and is keptin saidrotatable relation-by means-of-a key afl as shown in'Figure 5.

A plurality of coiled springs 3|, disposedwithin=-sockets- 38- in 11 sieeve 28,- and-kept Itherein by means of pins 311 abutting against the; flat,- radially extending webbing-of collar 32 bear against the end of sleeve' 28 urgingit in thef direction of wheel 23 forengagementof blocksfil with blocks 26 thereon. "Thus the -sleeve, inoluding its blocks, forms a clutch designed to bring. aboutithe'rotation of a xle 24 whenuit-isrso desired. inThei-operative action ofzithe clutch is controlled: bylmeans M 2; pedal33mwhich actuatesadever r34 -fulcrumed on ,a pin 35 and'termirratingwith across bar 36,

fitting into wan annulargroove: 3l in sleeve v 28.

The end of cross'vbar' fi fittin g into said annular-*groove *3T hasa side race cu-t on a slant of approximately w degrees. T-he: sleeve- 28 carr-ieson its surface two :lugsii iil; disposed parallel to 'aX1e"*24, butdi-ametrioally opposed to each other.Each'lug has a' diagonally formed-contact face--41 corresponding to the angle of slant on the crossbar and extending 'into the path-of-the said face on crossbar 36.

' The purpose 'of themedal control is to disengage the clutch "'ZB fI'Om the driving Wheel- '23.

This "occurs when lug Ml-is' brought in "the-course "0f the rotation of *the' clutch 2-8 against the pro- ;jecting endofcrossbar 36.' By reason of-the diagonal-eontactface 41 coming to encounter the slantingfaee (if-the crossban-theglutch is shifted away from the slottedhilly-25 "of wheel 23.

The engagement 'ofi-ug with the crossbar 3t,

"and there-lative position-of the clutch Y with respect to the driving-wheel '23; is shown" diagrammatical y i' gultes-ifl andll; The first named of said figures *shows thecluteh in its disengaged position; Figure- '-11 is-hows the-"clutch-imits-en gaged-position'with said"Wheel 23.

crank pin 42 fitting into a bearing in the lower end of a crank 43 which is held in place on said pin 62 by means of a retaining screw M passing through a washer 45. The upper portion id of the crank, being of reduced diameter, terminates in a ball shaped member 61, fitting into a socket within a thimble 48. The latter is axially held within cylinder 49, which in turn is disposed in a chamber 5!]. The chamber is integrally connected to, and extends downwardly from. the lower surface of the top plate II of ram it. At its lower end the cylinder 49 is provided with an outwardly turned flange 5i, through which bolts 52 pass to secure the cylinder to the rim portion on the open end of chamber 58. A worm gear drive, located at the upper end of cylinder 69, and generally indicated by numeral 53, serves to rotate said cylinder. The drive which is shown in detail in Figure 13, permits withdrawal of the thimble 48 from said cylinder into which it is threaded. This, obviously, can be accomplished by rotating the cylinder 49 while thimble id held stationary against rotation. A bearing E l within the thimble is in contact with the upper hemisphere of the ball member 41, hereinafter referred to as a ball, while a complementary bearing 55, hollowed axially for passage of crank dB, is disposed on the lower side of said ball.

The mechanism described above, including the drive wheel 23 the crank pins 42, and the crank rods d3 extending into chambers within the movable rams, discloses elements needed to cause reciprocial vertical movements of the ram, and in general, omitting novel details of construction, pertains to means already known in art. I shall now describe inventive features of my concept pertaining to the movable head it of my press.

As already indicated, the head rests normally on two pairs of guide columns I3 and lid, and is pivotally mounted as best shown in Figure 1. For this purpose the head contains two spaced recesses 56 for admission of the uper ends iii of one pair of adjoining columns i3. Said ends are flattened on opposite sides and perforated for reception of pintles 58, extending into adjoining portions of head IB as shown in Figure '7.

Mounted on each pintle outwardly of the recess MS is a pinion 59 in mesh with rack 63. The lower end 6| of the rack is circular in cross section and is axially threaded into pinion 62 which is held against axial movement between a supporting bracket 63 and a bearing 64 within the upper plate of base 14 as shown in Figure 3. Another sliding bearing for the rack rod is provided in a projection 65, jutting out of the upper part of ram Ht. Pinion 62 is driven by a worm 58 actuated by motor 61.

Columns l3a, are cut laterally at 68. In each case the part 69, extending upwardly from the cut and passing through head It as shown in Figure 3, is hollowed axially and contains a bolt ill. The bolt, as will be noted, is adapted to be threaded into a socket ll within said column Eta, below the cut 68. An annular groove and ball arrangement, marked 12 and E3 respectively, forms a conventional device to prevent the bolt from being entirely withdrawn from head it.

To conclude my description I wish to refer to the following details of construction:

Numeral 14 indicates a guard in form of an inclosure for the fly wheel I9. Numeral V5 indicates an adjusting device for collar 32, mentioned in the course of the specification, and numeral 15 indicates, in general, a mechanism serving to disconnect the clutch 28 from the drive wheel 23 upon completion of a one-half of full rotation of the clutch in its engaged position. As the mechanism is not inventive and is only incidental to the structural design of my press, more specific details are omitted. Finally, numerals H and 18 indicate dies affixed to the ram and to head It respectively, while numeral 13 shows a metal sheet disposed between the dies for operation thereon.

The operation of the press in View of the preceding description is quite obvious. The ram it, which supports a die ll, may be moved vertically upon guide columns l3 and 13a, first to be thrust against the die on the lower side of head It, and then to be brought away from it. This is accomplished by means of the crank rods 46 driven by shaft 24 and disposed at their upper ends within respective chambers 56, which are slung from the under surface of top plate H of the ram ID. There are, as the drawings disclose, two such crank rods 46, and two chambers 50.

The operation of the ram is controlled by the clutch already described, each upward movement of the ram being controlled by a foot pedal 33 acting indirectly upon the clutch. These details are of a standard variety. The operation of the head including its novel features is as follows:

When, in order to adjust the dies, or to replace them, it is desirable to have the head swung outwardly to the position shown in Figure 8, the press is brought to a stop, bolts 10 unscrewed to disconnect the lower sections of columns its from their top portions 69, whereupon by means of a switch which is not shown, motor 61 is set running. The worm drive 66 causes the rotation of pinion 62 which brings about the downward ver tical movement of rack 60. The rack engaged to pinion 59, causes the head to be swung on its pivots upwardly from column 13a in an arc of degrees or more for easy inspection, replacement or adjustment of the die mounted thereon.

I wish to point out that the press is especially designed for and adapted as a try-out press, particularly useful in the process of finishing dies. By reason of my structure it is possible to adjust the dies, to file off respective parts thereof, or to otherwise improve them, without the necessity of removing them from the supporting plate.

I wish also to state that the location of the head in its outswung position also makes it possible to adjust or replace the die located on top of the ram.

To bring the head back to its normal position as shown in Figure l, the worm gear 65 is made to run in the opposite direction, this causing the rack 60 to swing the head I6 back from its position as shown in Figure 8 to that shown in Figure 3.

It will be seen that some changes may be made in the structure of my press without deviating from the inventive principles disclosed herein. What I, therefore, wish to claim is as follows? 1. In a power press of the kind described, a base, four vertical columns mounted thereon and arranged in a quadrangle, two adjoining columns out of said four having each at its top an axially threaded aperture, a horizontally disposed pintle journaled in the top portion of each of the opposite two columns, a normally horizontally disposed head of the press, said head being keyed at one side to said pintles and having at the opposite side two boltsvertically disposed therein and projecting downwardly from said head and being adapted to be screwed into the axial apertures in the respective columns.

2. In a power press of the kind described, a base, four vertical columns mounted thereon and arranged in a quadrangle, two adjoining columns out of said four having each at its top an axially threaded aperture, a horizontally disposed pintle jcurnaled in the top portion of each of the opposite two columns, a normally horizontally disposed head of the press, said head being keyed at one side to said pintles and having at the opposite side two bolts vertically disposed therein and projecting downwardly from said head and being adapted to be screwed into the axial apertures in the respective columns, rack and pinion means to cause the pintles to turn around their respective axes and to impart an upright swing to the head when the bolts are unscrewed from said axially threaded apertures.

ALEXANDER BORZYM.

REFERENCES CITED The following referenbes are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,052,082 Miltner Feb. 4, 1913 1,567,766 Stacy Dec. 29, 1925 1,628,057 Nitchie May 10, 1927 1,977,549 Glasner Oct. 16, 1934 2,328,071 Jaeckel Aug. 31, 1943