US 863873 A
Description (OCR text may contain errors)
Nmsva. l PA-TENTED'AUG-20,1907. 1j. W. PRATT. HEEL CUSHION.
APPLIUATION FILED AUG. 5. 1905.
' UNITED- STATES PATENT OFFICE.
PHILIP WATSON PRATT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO CHARLES l". BROWN, l
v TRUSTEE, OF READING, MASSACHUSETTS.
I ton, in the county ofSiifiolk and State of 'Massachul setts, have invented certain new and useful Improvements iuHeel-Cushions, o f which the'followingis a specification. A
This invention relates to cushions adapted to be -inserted in the interior of a shoe, the embodiment here pressiondueto theweightof 'the wearer, 20,.
shown being particularly' designed for insertion and attachment to the heel portion, although it may, be ex.
tended' to' constitute 'an ventire internal sole.
. The invention has lor'its objet to provide njn article of resilient material,- sucli as ru'bber, which will have a.
exerted on by the Weight of the wearer of the shoe, and will' be prevented from spreniingA laterally'or -crosswise of theshoesothat its resilience' willbe main-- E tained and will. not be diminished materially by coin- Qi' ",'the .,-alcom anying'drawinggj-Figures .-1
shown as it appeersbefore the fastening devces'hereinafter' referred to are applied. Eig. 3 represents averti-1 l-viees ,-Eig. 4 represents *a perspectiveviewo another'- ior'xneof paid shown as it appears before the fastening de! vices are applied. Elig..-5l represents a sectional'view showing theorin lof-pad represented in Fig. 4, andin! cludingthe fastening devices Fig. 6 represents a sectional view of another vform of pad shown without'the .fastening devices. Fig.A 7 represents a perspective view of the assembled cushion,
devices. i Thesame reference characters indicate the salue ports in all. the figures. 'l
lhe cushion consists or' a resilient parl cc, prefer-(tbl y ol rubber, having the portion b adjacent thc shank part ofthe shoe when it is in placeyormed with a thin edge, a. leather liftor tread-pieces1 and va'iahric bottompiece d. The tread-piece is skiVed Ato a thinedge at that part which comes djae'ent to the shank of the shoe and.
it may be connected to the pad and the lwt.toln piece at the tapered part 'by a 'li'ne of stitching extending transversely across the cushion1 or by cement. The tread piece is'positively secured to the pad by rows of fastenings r which are preferably eyelets, the rows ex` tending lengthwise of the cushion or fronrthe breast end toward the rear or heel end. The piece d is secured by pasting or cementing tothe inner sole or socklining;7 thereby preventing the pad and tread-piece from 4working forward.
The pad is formed pn the lower surface with transverse ribs g having an arched form and Vseparated by grooves f.
and, 2 represent perspective viewsof aresiliet'pad forn'ii-nig a' p'art lof 'm'y firnprovedleshionst'riicture, the pad being including` the fastening Specification of Letters Patent.
Application filed August 5,1905# Serialllcn 272,852.
high' degree of resilience under the-.verticalfpressure .gzinuous surface broken by the grooves-z'Wvhii-h come .opposite-the crowns of the arches g."lThis'g i vcsan cxtended hearing for the treadpice` c-and caixsc's a. strong Vfrictionalengagementlso tlmtjwhen pressure-is applied -iipon the vtread-suda c e, thei=tendencyL of-y the pad to Patented Aug. l2O, 1907.
Intermediate the grooves f and Centrally-arranged with respectto 1the arched ribs g are transverse passages wh ich, in theforr'n of the invention shown inilfgs. l, 2 und 3..:i`rc made as open grooves i'. and in that of Figs. 4 and 5111"(A inclosed passages t" wholly surrounded, except ai' lhcr en ds, by the rubber of whichv the pad is composed. 'lhc legs h of the forni shown in Fig. 3, :irc thcrcl'orommmon lo the-arches of both series, and this nrmngcncntgives this pad the' appearance of being formed ol" corrugaiions un both surfaces, while theother 'forni is'corriigtcd on its lower sidefonly. The ribs orithe- 'uppersiilcol' llicpad having square corners, and they are armngcd in thc 'ot Figs.` l, 2 and 3, are formed with flattencd crowns e same plane so thatthey constitute.pmclically a conthe'wearenfislesistei udjyt Q pad-held irr place and practically-*the Whole pressur 'caused to-colc directly upon the legs of the rclle, Ciilsing them to he compressed, While remaining in' placeI witlrscarccly any latexnllseparation.' a
' 'The arches g on' the under side oflie pad are rounded and they are held from -separating wliel'l'p'rcssurc is a pplied by'means of a. flzingel-lforincc'l :'upon tho pad c.\- tending about its periphery and conncctedto the mls of the arched ribs, tying tlienl. together. V cntilaling holes o extending through' the crownsoi lhearclnfd' ribs are formed in the pad. v
Preferablythe thickness o the material forming thiI crowns of the arches is less than the depth of the groovrs. so that the grooves on each side of thc pad cictcnd hc` yond the bottoms of those on the other side. ihr-ir hottom portions thus overlapping. Thisy strnriilrc prfA vides that all lhc wright horno by thc 11nd is supported by thc legs o the archi-s and permits-i1. g'lczil :ununnl oi yielding before thc crrmfn portions ol' thc upper ari-hrs mum of resiliency is obtained togcthc-r. with a saving in the amount of rubber nec( ssary to make the psd. In order'still further to pri-ucm t-lnnp-.id from sprrmling out and creeping iougitudiimlly wh( n pn .ssrn-eis applied toit, there may biprm'idcd. il' di-si'rr'd. in nihlition to the Iiangc'l and thc structure prmllning; frictionzil engagement bclwccn 1hc 11mm' sido nl llnpad and thc tread-picco. lic-pieces. ribs or hriilgcs oxo-mling across thc groovcs 1' beim cn :mil cnnnccli-(l lo 1h1- transvm'sc :ircln-l ribs-on lln umu-r siilinl' Ilw luid. These tiemclnlwrs ivill. :is stall-d. li-nd lo 1mm-ul clon,v gat-ion of the pad undcr prvssnrl-aml so increase thvllzlstic resistance of illu lalllcr lo colnpl'vssioxi. This 4idea. is carricd out lo n. groan-r cxlcnl und in n way