US1541058A

US1541058A - Assembly fixture

Info

Publication number: US1541058A
Application number: US629404A
Authority: US
Inventors: Charles L Lee
Original assignee: General Motors Research Corp
Current assignee: General Motors Research Corp
Priority date: 1923-04-02
Filing date: 1923-04-02
Publication date: 1925-06-09
Anticipated expiration: 1942-06-09

Description

C. L. LEE

ASSEMBLY FIXTURE June 9,- 1925.

5 Sheets-Sheet 2 Filed April 2, 1925 fnuen 75F June 9, 1925.

1,541,058 0. L. LE-E ASSEMBLY FIXTURE Filed April 2, 1923 5 Sheets-Sheet s J09 l n III ZZ/J ZTIESEEE- [EL/E2720? Jun 9, 1925.

[1/12 nesss 'c. L. LEE

ASSEMBLY FIXTURE Filed April 2, 1925 5 Sheets-Sheet 4 c. L. [,EE ASSEMBLY FIXTURE June 9, 1925. 1,541,058

FiledAprii 2, 925 5 Sheets-Sheet 5 upon thecylinder support'23- and provided ring 31 Which is with a. notch. 33 adapted to be received by a pin 34carried by the support 23. Astigment gear 35" attached to halfring 30 engages a segment gear 36 attached to the halfpivoted at 37 upon the support 23. Half-ring 31 is provided "witha :notch 38 adapted to be received by the'pin' 34. Movement of one. of the half-rings causes the'niovement of the other through the gearing. VVhenthe, haltrings strike against the pin 34 the half-rings .W-ill be spaced from the exterior valLof. the cylinder 25 for the. purposeto bedescribed later. -'lhehalf-rings'30 and 3l,a-re ;held-jin position shown in Fig. 31 by 1neans of-tlie fork lever 40 pivoted port 23 and provided: witlrlugs 42and 43 adapted to preventthe outivard movement of the half-

rings

30 and 31 respectively. These. half-rings provide means. for embracing a. sheet of bonding materia.l tobe placed around the cylinder and; also ;"provides@ashelf for supporting the fin illtllfillal.

shelf is located at a predetermined distance from the. base and.top of,the'cylinder...' a 1 .In) order toyieldingly clamp thesheetlot bonding:material; shown {at in Fig.7 5, and in; Fig. 3, about the cylinder each halfring is provided with .an arm 46 pivotally mounted at 47 each arm being, yieldingly pressed towards the cylinder by meansof a spring 48 bearingagainst astop 49; Normally a lug;50 provided on each arm 46, extend s insidethe inner periphery 51 of each half-rin as shown in Fig. A notch 52 is provic ed for receiving' the lug50 .When the arm is caused lo move v inner periphery 51. lVhen thelugs- 50 are in the position shown in. Fig. the-arms 4(3 \villbear against the stops 49.1 Vi henthe half-rings are clamped in the positionshown in F ig. 3 the lugs 50 will bear against the sheet of bonding material 4 5 Wrapped about the cylinder to hold this material itemporarily in place about the cylinder and to prevent it from sliding down along the cylinder. e g Q Afferthe bonding sheet 45' has been socured in position the fin materialdesignated as a whole by numeral in F 2 is placed upon the half-rings 30 and31 and Wrapped about the cylinder 25 and bonding means 45 as shown in Fig. 2.; The half-rings 3O and 31 :provide for supporting-the.fin material and'for locating it correctly"with respect to the upper end of the cylinder.

The fin material and bonding sheet are held temporarily in position by anyfsuib able clamping means such as soft iron binding Wires 61. In order to space these Wires a-nd hold them ternporarily While they are i being wrapped about the-cylinder and tin material and arebeing secured by pushing 64"i1pon bracket at 41 upon. the sup- This away; from the Then there 1s a ,grou1 the ends together, thereis provided a block 62 ha vinggrooves '63,:eaclrada-pted to receive a Wire 61; This blockis pivoted at 65secured to the base The bloclris providedfwigth an operating handle 66 andfisheld ateither inoperating andnonroperating positions shown at Figs.

of a spring 1- and i 4 respectively by means attached tdtlie bracket 65.v e Tense this apparatus it is first arranged as shown in Fig. 1, thenthe cylinder 25 1's I placed: in 'position'over the post 24 with a portion of itsbaselocated by the fixture 2,7. 1

material is Wrapped around the cylinder and held With oneihand while 7 The bonding the other handrotates the half-

rings

30 and 31 to the position shown in' Fig. 2 and the half-rings are held. in..place by means of lever 40. Thefin material 60- is placed upon thepshelf providedbythe half-

rings

30 and 31 and is jwrappedjabo iti the cylinden Bind ing;wires are laid" in 'the groove63in the blocki62 and the block is moved tofthe posie tionshown inifFigsQ2and The binding Y .7

ires 61 are xv'rapped about the fin maria GOfand th ends aretwisted together to hold the fin gm a terialinplace.

he appara us. are m ral and; assembly to beremovedi- -For convenience'in"manipulation the cylof ;p'osi .-tions by. means of sieves 70 having a his; adapted to 'e'nter'one ofa series of notches Z2;providedinjthe support 23. The levei".. 70' is pivoted at 73 and yieldingly pressed ;toiv.ard the support 23 by means ol aspringJ74fQ e 7 l'lllie vtori'nfofapparatus shown in Figs. 2 and'j4 canlbe used Withi fin" material having tin loops-of uniformj height'or of different heightssuchasthefin material 80, shown in F ig. 6. lVliere fin material such as-shoivn at is used itis necessary ,1 to locate this material in correctangular relation with respect to the cylinderjasWellas nally. QNVith this obje'ct' in view. the form of the invention shown in the remaining views has'been provided. The liumaterial 80 includes a plurality of fins such 21531 which project'the [maximum distance from,

the base portions 82bit the fin material.

which are gradually diminished in height that is, n radial wm'ojection from' the in bases. The fin material is flattened a oil soto speak as .Willbe apparent from F ig. 11 more particularly in order to permit the cylinders to be grouped togetherin ports of eachpair of pairs with the intake cylinders closely adjacent as disclosed in the copending application of Charles F.

Kettering. Serial No. 417,095,:filed October 15,1920. 'lhey fins indicated at 84 in F ig 6 e lof fins. indicated at T-henfthe p arts of; p back to theposii tioii shown inFl permitting thecylinder longitudilllU 30* and 31*, these springpressedf arrriS time:

mar fi ii handle: 7

'zidapted to fit war a pro;

: cylinder bosses 92 incorrect angular align v nient therewith.

It is desirable that thegroup oifiattened fins 83 shall be arranged diametrically opposite the group 8% in order that, when the fin material is assembled a plane tangent to lelism, the other two pins 115 of the group shownin Fig. 7 are each inserted through.

a bushing 111 and through a loop of the fin ii'iaterial, the fin inaterialbeingarranged so that one of saidpins will pass through a loop havinga certain relation with respect to the group or

shorter fins

83 and 84. Since the fins-are not all the sameheight,

that is, project the same distance from the center of thecylinder'it is'not desirable to use simply a binding wire" or temporarily securing the fin into position, because as explained in the copending appl cationot Charles F. Kettering, Serial No. 514,014

filed November 9, 1921, it is desirablethat each ofthe finbases 82 shall bepressed against the brazing material with substantially the same pressure in order that the bond between the cylinder and the fins may be rendered more uniform, In the assembly shown in Flg. 2, a binding Wl1 6l applies pressure to the fin loops of the materialGO and the fin loops themselves trans- 111113 pressure to thebases of the tin material.

If binding Wires are used in connection with the irregular finningthe shorter fins would not at all. receive pressure. from the binding 'wires. Therefore; a number of pressure transmitting elements 120 shown in Fig. 8 are'provided for assembly with the cylinder and fin assembly. h

After the fin material has been located as described, one of the U-shapedspacing bars 120 is placed around each of the fins which are shorter than the highest fins 81' so that a circle concentric with the axis of the cylinder would be substantially tangent to the tips oi the highest fin loops and the tips of the spacing blocks 120. lVith this arrangement any suitable peripherallycon-- tracting binding device can be used such as binding wires 61 or a clamp 125 as shown in Fig. 9. This clamp 125 comprises itjCOll tractable split ring 126 provided with

lugs

127 and 128 adaptedto receive the head 129 ct a-screw 130 anda'nut 131,1'espectively, as shown in Figs. 10 and 11. Oneor more of these clamps areplacedai'ound the specing block 120, andthe screws 129 areturned into the notch 131 to clamp the assembly temporarily together. I

The pins can now be removed'allowing the plate 109 to be swung intothep'osition shown in Fig. 5. The lever 100 is moved upwardlyto cause .thegyokej 94 to-release the base of the cylinder Thenthe cylinder can. beren'io. ed I frointhe. assent" bling fixture.

Atterthe cyhnde s and fins assembled in themanner described 'llELVB been removed from the assen'ibl ng'fixture, they are ready for. subsequent treatment norder to bond the fin materialpermanently;onto the cylin der. .This treatment is] described and claimed in the copending application of Charles Kettering, Serial No. 514,014, filed November 9, 1921 and includes heat- 'ing the cylinders'to a'temperature above the melting points of the bonding material and below -that of the fin material and the cylinder material, The heating is per.-

formed in afurnace which is arranged so. that the fin material, will not be unduly oxidized; and the fin material is previously coated with a protecting coating. After the;

bonding operation the, temporarybindingwir'es or binding clamps are removed and;

the; cylinder is then ready for subsequent machineoperations such as grinding its bore and providing valvepOrtsin its head, and holes in the'bosses 92for the push rods.

mile-the form of embodiment offthe in ventionias 'herein disclosed, constitutes. a

preferred form, it gisto be understood that other forms nightbe adopted, all coming within the scope oftheclaims whichtollow.

WVhat' I claim isas follows? 1Q Apparatusiio'r the manufacture of finned cylinders comprising, in combination,

a support adapted to receive a cylinder, meanstor locating the cylinder with respect to the support in a predetermined relation,

means for. supporting fin material about the cylinder, and means torlocating the fin materialwith respect to thelcylindei' in a pre determined .relation.

2. Apparatus for the inanufacture of finned cylinders comprising,in combination, a support adapted to receive an engine cylinder,- ineans 'forsiipp'oi'ting a' continuous stripof. finin'iaterial includinga plurality of fin loops 'placed. about fthe cylinder, and meansforflocating certaino't the fin loops.

with respect to. the engine cylinder-in a predetermined 17613131011;

Apparatus for the manufacture of finned cylinders comprising, in combination, a support adapted to receive an engine cylinder; a pair o l ihalfirings pivotally mount-f ed on the supportand adapted to be moved into cylinder encompassing position .to:

clamp a sheet of bonding material around thecylinder,

PP fort the inanufaeturef c-fi finned cylinders comprising, in combination, a support adapted to rece ve an engine cylinder; a pair of(half-rings"pivotally mount ed'on the support and adapted to be moved into cylinder encompassing; position" to clamp. a ,sheetcf material around the cylinder; and a toothed, port onprd' Mei-ma v ided on each ring, ope i termeshing with the other whereby the moving of one will cause movement ,of the other.

51 Apparatus for the manufacture of finnedicylinders comprising, in combination, a support including afceiitral post adapted to receive an engine cylinder; at pairof halfrings pivotally mounted on the support in predetermined relation to. the post and" "adapted to be moved into cylinder encompassing position to clamp asheet of bonding material around the cylinder and adapted to provide a locating platform for the fin material with respect to the cylinder.

6. Apparatus for the manufacture of finned cylinders comprising, in combination, a support including a central post adapted to receive an engine cylinder; a pair of halfrings pivotally mounted on the support in predetermined relation to the post and adapted to .be moved into cylinder encoinpassing position and including yielding members constructed and arranged to clamp a sheet of bonding material around the cylindei' and adapted to provide a locating platform for the fin material With respect to the cylinder.

7. Apparatus for the manufactureof fin,

cylinders comprising in combination a cylinder support and means for clamping a sheet of bonding material about the'cylinder and. for supportinga quantity of fin material placed about the cylinder.

' 8. Apparatus for the manufacture of fin cylinders comprising in combination a cylinder support and means for holding the cylinder in position for clamping a sheet of bonding material about the cylinder and for supporting a quantity of fin material about the cylinder.

9. Apparatus for the manufacture of fin cylinders comprising in combination a support for the cylinder, means for supporting a quantity of fin material about the cylinder p and means for temporarily placing and posi tioiiing one or more binding Wires for teinporarily holding the fin material in position.

10. Apparatus for the manufacture of finned cylinders comprising in combination, a support adapted to receive a cylinder,

means for locating the cylinder with respect tothe support in a predetermined relation, and means for locating fin material With respect to the cylinder in a predetermined relation.

11. Apparatus for temporarily securing to a cylinder a quantity of fin material including fins having fin bases to beijoined to 'the cylinder, comprising in combination spacing blocks of equallieight adapted to be placed against the tin bases, and clamp iiig means adapted to bear against the spac ing blocks. 7

IZ-"AiuMi W i0 t m ora ily i e i irs to a cyl nder a cont nuous of hi mater al nclud ng fins of varying height, each fin having erase, c p ing-1 c mbine.

t ra ing. lo k e qiw l eight ada ted 01 than-the iinaxi nu n, and clamping mea s adapted-to bear against the Spacing blocks and this ofmaxiiiium-height.' i

.13.-Apparatus for the manufacture of finned cylinders comprising,'in combination,

asupport adapted to receive anenginecylinder, including means for concentrically "positioning the "cylinder on the support; means secured to the support andadapted .to locate the cylinder on the support and prevent rotation of said cylinder ,relative p eet ag ius the-bases of fia shmte thereto; a pair of half-rings 'piv0tally1 mounted on the support andladaptedtobe moved into cylinder encompassing position tpj clamp a sheet of bonding material around the cylinder and adapted to act as a locat- 4 ing platform for the finfmaterial With respect to the cylinder; and means for;locking said halt-rings incylinder encompassing position.

i la. Affixturelfor assembling finned'cyl inderspreparatory to the heat-treating operlocating plate adapted to be placed on the cylinder in fixed relation thereto; and means cooperating ith the locating plate, the clamping means and the finm'aterial there- I betweenpfor locating the material relative to the engine cylinder; i I

' 15. Apparatus for the manufacture of finned cylinders comprising, in combination, as ipport including a base and a central post over Which the cylinder is adapted to fit; means'supported on the base for permitting the cylinder to be located inonly oneposil tion relative to the base; means adapted to clainpa sheet of bonding material about the 7 cylinder and for-providing itPlZLiIEOlIH for longitud nally locating the fin material rela tive to the cylinder, said means having a plurality of locating holes a plate sup-- ported by the base and. havingholescorresponding to the holes in the bonding material clamping means,said. plate being adapted to be moved in position above the" base post so that the holes thereof are in alignment with the holes in the clamping means; and pins adapted to be inserted-in the holes ofthe plate and clamping means and to extend adjacent tofthe fin material for locating thefin inaterialrelative to the engine cylinder. 7

16. Apparatus for the manufacture of finned cylinders comprising, in combination,

a cylinder s upport; means for clamping a said binding deviees secured about the sheet of bonding material about the cylinder fin m riali- 10 and for supporting a quantity of fin ma- VI I test mony whereof I hereto aifix my terial placed about tlie'cylinder; and means g t v adapted to be moved into proximity with 7 CHARLES L. LEE. the fin material and provided Withmeans for Witnesses: v temporarily holding binding devices in GEOKE. PASCO,

spaced relation With the lin material While WMQ P. PAs co.