US1936958A - Apparatus for making galoshes, shoes with rubber soles, and the like - Google Patents

Description

H. A. SKOV Nov. 28, 1933.

APPARATUS FOR MAKING GALOSHES SHOES WITH RUBBER SOLES, AND THE LIKE Original Filed Oct. 28, 1927 3 Sheets-Sheet 1 H. A. SKOV 1,936,958

APPARATUS FOR MAKING GALOSHES, SHOES WITH RUBBER SOLES, AND THE LIKE Nov. 28, 1933.

Original Filed Oct. 28, 1927 3 Sheets-Sheet 2 Nov. 28, 1933. H. A. SKOV 1,936,958

APPARATUS FOR MAKING GALOSHES, SHOES WITH RUBBER SOLES, AND THE LIKE Original Filed Oct. 28, 1927 5 Sheets-Sheet 3 Patented Nov. 28, 1933 UNIT STAT S;

APPARATUS 3 LIKE 1 J Henry Arnold Skov, Copenhagen, Denmark, 515- 1 signor, by mesne assignments; to l-Ienry" Christian Louis Dunker, Helsingborg. Sweden- Application October 28, 1927, Serial No. 229,445,,1 i and in Sweden November 5, 19,26. Renewed February 17, 1933. we

A: Claims; (01.1 m-

The present inventiongrel'ates to a process and a machine for making galoshes,'shoes with rubber soles and the like whichare' pressed in a kept stationary for a proportionate andadju'st able period of time after'which the side matrices areagain moved outwards frorh'thelast, g

The invention is further characterized. in that the sole matrix or sole matricesare moved in a way similar to the one. in which theQside matrices are moved.

After the actual pressing process the side rnat rices as well, as the sole matrices are again moved outwards so that the finished galosh or rubber shoe fitting on the last may be removed together with the latter and a new last dressed with caoutchouc and fabric lining may be insertedin the machine to replace that which has been re-.- moved. 7

i The side matrices may in' a knowngmannerbe' moved towards the last in converging directions.

.The movement of "the side matrices normally takes place 'in'aplane at right'a'ngles' to. theid'ie 5 rection of movement of the sole matrix or sole matrices. 1

Another characterizing and peculiar feature of the invention consists ingthe slow movementof thej'sole matrix (if desiredalso of the side matrices) being brought about, during the actual pressing processgby' means of air pressure actuating' the matrix from an air chamber through v the medium of a fluid string enclosed in a'kn own .manner apipe line, oneend of which is conend of which is connected with a pressure chamber connected. direct or indirect with the matrix concerned.

. Normally the machine or, apparatus'is "con,- 50 structed in the form 0f=a -kind of press having a horizontal table, onwhich the inner mould or last may be placed with the sole side turned up; wards. iBefore the last is introduced inthe ma- FOR MAKING GALosHEsK snons WITH RUBBER SOLES; AND r11 1.

shaft thesaid cams being curvedin such 1a;

' of the" pressure from an air chamber;

H ing movement. I

, crank shaft serving to, operat 'e the side matrices and the sole] matrix, or causing these ma to be operated as thefoaseifmay be; o'n'ly'has; 'ter nittent Emotion. IThe crank shaftperfor .a rqxima lrch f i trk oiiu awh if i nected with the said air chamber and the other 100 stroke or turngthereby removing The horizontal press table the is.

vided with the required guiding devices 'for' the side. matrices which have reciprocating' inovements in horizontal directions,,so that theyvare caused toslide' inwards when theflmachine is started andto become assembled around thelin nermould or last. The soleimatri gisIarran d r above the innerfm ould or last and has. a vertical] movement.

y The slow movement of the sidejrnatrices during movement of these'matrices towards the last and their quick removal from the last aftertheprooiess of'pressing are normally obtained trimaran-re medium of suitable cams aotuated froni-ja'crank1'- ne'r that the reciprocating motion is rapidg-while thef forward movement of the isi'de matrices ing the actual processot pressing ibecomesflv v slow on account of the .very small pitch or ascent enable them to .be easily replacedwby other team s The 'soleimat'rik isilrn'ost'frequentlymoved v t v P} and down bymeansof a bjeam actuated fromga crank, en en er thesaidbea'rnlcarrying the sole matrix-and, theothenend f6 j i crum of thebear'n, Nomally. fulcrum" not an absolutely fi ed pointbut is forfmed by carried by a rsmnwmmisunder ltheinfluence pressure acting indirection the a'string of fluid} In marine I a that the sole matrix gets a slowpressinggmove ment; of the nature of aretightening or re'c1amp I In the constructional iorrrifof the machineide scribed abovethe arrangementis such that the machine is 'started'and, while the matrices :bev come assembled-around the lastriFIfherenpon the crankshaft is automaticallyswitched*in-gor coupled -again, rso; as to complete its, working from their oontact'with the last. i

the actual processof pressingasmn asthe rapid of the cam -edge Theisaid cams -.;are:;preferab ly 1, arranged and mounted in such a mannerjrasto t e ma c s the matrices are heated; with tnj; ates-514 ing formed by the back side of the hindmost bearing forth'e crank shaft (Fig. 4). The member 41 is secured" to the frame plate 42 by means of two bolt members 43 or the like projecting through suitably ar'rangedvertically extending holes 44.

within the hub of the large toothed 'wheel 12.

The coupling is arranged in known manner so that the toothed wheel may rotate freely on the shaft when the pawl 47 is not secured and kept at rest by one of the stops or 46, while the toothed wheel 12 is coupled up with the crankshaft as soon as the pawl '47 clears the said stops. The frame plate 42 (Fig. 7) carries a two-armed rotatable ratchet 48 whose one end may engage with the upper edge of the crescent-shaped member 41, and whose other end is'adapted to be actuated by one'ortwo projections 49 provided on a cam 50 carried bya ratchet wheel 51- rotatably' mounted on the frame .plate 42. The'said ratchet wheel 51 is actuated by a pawl 52 rotatably connected with a double lever 53 mounted on the frame plate 42., is adapted to be acted uponby a number of projections 54 provided on a cam 154 rotatingtogether with the toothed wheel 12. The upper end of. the crescent-shaped member 41 is provided with a projecting member 55 which, as may be shaped member 41 to .be lowered (Fig. 7);

this movement the pawl 47 becomes clear of seen in Fig. .7, is mounted adjacent to and directly-below the pawl 52, in such a manner that j the projecting member. 55 will lift the pawl 52 upwards when the member 41 is moved upwards,

by theratchet 48 being rotated, so that the said crescent shapedmember 41 becomes disengaged and is brought under the influence of the foot le- .ver spring. r i The devices above described and'set forth,-and

thus also the whole apparatus now act and are operated in the following manner: 1

When the inner mould or last' .40covered or dressed with caoutchouc andlinen'limngor the like-has been placed'in its proper position on the press table 2 the footilever is depressed, which .causes the press to istartoperations, the depression of the foot-lever causing the crescentthe stop 45, the toothed wheel12 being thereby coupled up with the crank shaft 4. This'coupling action causes the crank shaft to be operated' from the driving shaft. 3 (Fig. 4), and'the crank shaft will rotate approximately half. .a

turn, disengagement being effected again as soon as thepawl 4'7 strikes thestop 46. Thesaid movement of the crank shaft will cause, in part,

pressing Joperationa? The beam-'19 will follow. the. downward movement of the crank'22, during this movement rotating on the pivot 57in the piston or cover 23. "This rotation of thebeamon the said pivot as a fixed fulcrum will onlybe continued, however, until the sole matrix meets I the great resistance offered by the layer of caoutchouc surrounding the last 40. From this moment the pivot 56 (Fig. 4) may practically speaking temporarily be taken to constitute a fixed fulcrum, the continued movement of the J crank lowerdead centreposition." I The lower end of thelever 53 the lastx;

shaftfin a: direction downwards from now' on forcing .the'pivot 57r and thus also the -cover 23,

which is in'the form of a piston,downwards against the pressure from. the air-chamber 25.

During that period in which the crank 22-iskept at rest by the pawl '47:engaging thestop -46, the pivot 58 may temporarilyibe taken toconstitute I a fixed-fulcrum, thus causing thebeam 19 to be subjected to a slight rotating movement (anticlockwise in Fig. 4.) This rotating movement caused by thefpressure'in the air chamber, =and the result hereof is that the sole matrix obtainsfa very slow and yielding movement downomitted, so that the beaml9 (Fig.4) isrotated on the pivot 57,-whiehin this case acts as a'fixed fulcrum and is adapted as. such., As the beamv is actuated from the crank 22,'"the sole-matrix is moved rapidly towards the last, after'which-the movement is slowed down while the crank approaches its dead centre position. The movement will be of the 'oppcsitenature'during the sub'sequentmovement of the crank away from the Along with the toothedwheel 12 a caml 54 rotates, whose projections 54 one by one will strike the lever 53. The pawl 52 isther'eby brought into a horizontalreciprocating movement; :The pawl to move, which wheel 51 during its rotation-carries the cam 50]along with Lit.1 Sooner or 'later the projection. 49 '(or'one of the projections 49' onthe cam 50)2 will strike the-projection-onthe lower end of the ratchet '48, thenpperfend of f this ratchet 48 being thereby moved out {of em "gagement withthe crescent-shaped member 41.--

As sooncas. the crescent-shaped member"4l ,is

disengaged it will bewmoved'upwards;'whereby the pawl 47 clears thestopr46, When this'oca' curs the .crank shaft will again rotate about half a turn, until the crank" shaft is ag'ain disengaged from the toothed wheel 12 whenthe pa'wl'f47 strikes thestop 45; This rotationiof. the crank made tomove so thatythe sole;matrix-.;is1'moved upwards and away from the last,and in part that the cam shaft 5v is also madeto 'rotatefso that the side matrices similarly are moved awayv from :-The length of ttaitas gkdtrmg alienate matrices )enclose or surround the caoutchous onthe last, or, in other'words,; the durationwof 1 the combined pressing and vul'canizing period, may be varied in part'bycausingthe pawl 52,-to move one',- two or more 'teeth at each strokeg-on the ratchet wheel'51, and'in'part by making use V of one, two or more projections 49 on the; cam.

50. Thus the use oftwo projections 49instead of a single projection only will cause. the-duration of pressing to be halved; A

The easiest wayof heating the}. matrices is-to and explainedli's} provided with a single; sole.

m atrix van'd-founside matrices, but themachine may just as well be built witha sole matrix con- -sisting of two or- -more single matrices. "Similarly, there is nothing to prevent themachine being built with more than 'four side matrices.

The machine may also be so constructed that the re-tightening orzreclamping of the sole matrix, as mentionedand explained above, is not 105 52, in its turn, will causethratchet wheel 51 done by the use of hydraulic means, but bymeans is I of the use. of a'cam with a small pitch, exactly similar to what has been described in respect of the side matrices. The re-tightening or reclamping-of the side matrices may just as well be done by the use of hydraulic force,- instead of 1. Apparatus for the manufacture ,of rubber footwear including an inner mold, a sole matrix and a plurality of side matrices characterized by a toothed wheel running loosen on a crank shaft with which the toothed wheel is coupled cruncoupled by means ofa coupling device comprising a'pawl projecting beyond the saidshaft, the said crank shaft actuating the sole matrix by means of, a connecting rod linkably connected in asuitablemanner with a rotatably mounted beam carrying the sole matrix, the said crank shaft simultaneously actuating the side matrices through the medium of a cam shaft whose cams actuate racks meshing with a toothed wheel serving to actuate the side matrices;

2. Apparatus for the manufacture of rubber footwear including an. inner mold, a sole matrix and a plurality of side matrices characterized by a crescent-shapedmember actuated by afoot lever, the said member being provided with, on the one hand, two stops and'coop'erating atthe upperand lower position of the said member with a coupling device, which couples or uncouples the driving shaft of themachinewith the driving member for 'causingth'em to rotate, and, on the other-hand, a projecting member which, at the upper position of the crescent-shaped member raises a pawl, thus disengagingthis pawl from a ratchet Wheel, while the projecting member when thecrescenteshaped member occupiesits lower .positiom permits the pawl to actuate the ratchet wheel'so that this movement thesaid. ratchet wheel will continue as long as 2thecrescentshaped member is in its lowermost position;

3. Apparatus for'the manufacture of rubber footwear. including aninner mold, a sole matrix ["Iand; side matrices characterized by .a' toothed wheel" running loose on the crank shaft of the machine which toothed wheel is. coupled with uncoupled from the said'shaft by' meansof a coupling pawl, the said toothed-wheel being :Q'fixedly connected with "a cam which card; by

'being'thereby disengaged and ,being permitted :to lie-lifted under the action of a spring.

4. An apparatus for the manufacture of rubber the-mold, and-a plurality of side matrices toexert .mold, side molds, a crank shaft, a toothed wheel.

footwear and-the like including'a last mold on which the material is placed, a sole matrix to form the material on the sole of the galosh under pressing contact between such sole matrix and a-pressing contact on the sides of the material, said apparatus including a driven crank shaft for initially operating the-sole matrix toward and insubstantial contactwith the material on the mold, fluidpressure means for operating-the 3,5

sole matrix for the pressing operation, means for feeding the side matrices toward the'mold with a rapid constant motion and means for thereafter feeding the side matrices into and maintaining them in pressingcontact with the material on the mold to a retarded movement limited as to distance. v

5. In an. apparatus for the manufacture of rubber footwear, amold last on-which the material is, placed, a sole. matrix operated to press the material on the ,last, a plurality of side'matrices for forming the side material on the last, means for operating the sole matrix with respect to the last, and meansfor operating the side matrices with respect to the last, said means includ ing cams formed in part to induce a rapid move ment of the side matrices and in partyto induce a materially slower movement of said side mat-'- rices, the cams transferring the respective move-. ments unchanged-to the side molds. J 5. An'apparatus for the manufacture of rubber footwear comprising an inner mold portion, a sole mold andside molds and characterized by a toothed wheel running freely on the crank shaft of the machine and coupled to and disengaged 111) from the said shaft by a coupling pawl, the said toothed wheel being operatively connected with means which, during the. rotation of the toothed wheel, move a pawl caused to work on or leave a ratchet wheel by means of a projecting member, 115 the said ratchet wheel effecting motion ofmeans which, .after. a predetermined interval of time corresponding to a predetermined angular rotation .of the ratchet Wheel, serve to movea locking device keeping temporarily a crescent-shaped '129 member in its lowermost position, the said lock-: .ing device releasing the crescent-shaped member" for upward motion. when the locking device iis effected because the ratchet wheel has carriedout' the angular motion corresponding-to thepredetermined interval of time. L T l I '7. An apparatus for the manufacture of rubber footwear comprising an inner mold portion, a sole running freely ,on the crank shaft, a pawl for coupling the wheel and shaft, a ratchet wheel,

means operated by the toothed wheel to selective ,tive .in eachposition thereof for controlling'the 1' relation of-the toothed wheel and crank shaft. 7 v

HENRY ARNOLD sKov;

Images