US2011615A - Thread waxing device - Google Patents

Thread waxing device Download PDF

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Publication number
US2011615A
US2011615A US661726A US66172633A US2011615A US 2011615 A US2011615 A US 2011615A US 661726 A US661726 A US 661726A US 66172633 A US66172633 A US 66172633A US 2011615 A US2011615 A US 2011615A
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wax
pot
thread
plate
heating
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US661726A
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Choice Frank Coleman
Lincham Rowland Augustus
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B67/00Devices incorporated in sewing machines for lubricating, waxing, or colouring the threads
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00Coating apparatus
    • Y10S118/19Wire and cord immersion

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  • Sewing machines of various kinds are used in the boot andshoe industry for sewing the uppers and welts welted s'lioesto insoles; for sewing outsc-lesto thewelts of 'such shoes; forsewing the uppers of turnshoes directly to'- their soles and for sewing theout'sole of a Blake or'McKay shoe to the insole.
  • Y Sewing machines of various kinds are used in the boot andshoe industry for sewing the uppers and welts welted s'lioesto insoles; for sewing outsc-lesto thewelts of 'such shoes; forsewing the uppers of turnshoes directly to'- their soles and for sewing theout'sole of a Blake or'McKay shoe to the insole.
  • the thread guiding means aforementioned which constrain the thread topass through the melted wax inthe wax pot to become coated thereby usually comprise thread-guiding rolls which are supportedwithin the body of wax in the waxpot,
  • the'saidthread'guiding rolls should be heated by means additional to the hotwax' in order to ensure that they shall be maintained at an adequate temperature so that the wax on the thread-shall not be” cooled and hard ened by contact with them.
  • t is also: desirable that the wax-pots of such machines should be of suificient capacity to ac commodate a relatively large amount of wax so as tc'avoid the need for frequent replenishment, and that the means for meltingthe' wax should be capable of: melting the wax quickly (for example at the beginning'ofi a days work) withoutoverheating th'e'waxand thereby destroying some' of: its desirable'qualities.
  • wax-pots or" the kind at present ingeneral use are arranged to accommodatea relative1ylarge supply oi'wax it becomes dificult' toarrange fcr'rapid melting of. the body of' the wax by heating.
  • means external to the wax pot since aithcugh the wax lying closest to the heating means may melt comparativelyquickly yet, since the waxitselfiis hut' a poor conductor. oflh'eat, the wax lies out offc'on'tact' with the'walls of the wax pot melts but slowly.
  • heating means in theinterior of the pot is made use of to melt the waxand is arranged t'ogive off a rela tively intense heat to melt the wax rapidly, there is a danger that the waxi'n the immediatevicinity B: of the heating means will become overheated and charred; while wax which is remote from the heating means will melt onlysl'owly.
  • One oft-he severalobjects of the present invention isto provide anovel and improved means 101 in a wax pot to obtain eflicient heating of" the thread guiding rolls wherrthe' Wax. pot issecured inits operative positiono I
  • Another of the several objects of the present invention is to provide a novel and improved [5 formof Wax pot of relatively large capacity in which a portion of the waxin it-maybe rapidly melted without being overheated;
  • Another of" the several objects of the present invention is to provide a-noveliand improved forrn 20 of wax pot which shall berelativ'ely simple in'construction and efficientlinuse.
  • a wax pot in which the thread guiding rolls are carried upon avertical plate arranged to contact with the heated bottom of the wax pot to be heated thereby, thus serving not only toheat" by conduction the thread guiding rolls which it carries, but also serving to heat the wax on' either side ofit; Means are also-'provided to clamp'the bottom: of the-wax potagainst the roll carrying plate.
  • the contacting faces of the plate andwax'pot are not plain but the'bott'om of the wax pot has a- /"-shaped' ribrunning along it on that portion against-whichthe bottom ofthe said platepresS'esand the' bottom-of the-plate has-a v shaped groove running along the-length of the-plate so that as 40 the wax pot israisedtO ardsthe plate; the rib onthe wax pot bottom enters into and presses against the sides of the-groove in" the plate-andestablishes firm contact therewith over a side area. Any wax which flows-within' the groove in the bottom of the plate-when the wax pot-is: lowered from the plate will; before it hardens and sets, tendto'run down' the sloping sides of the groove, thus leaving themclean.
  • the wax pot is heatedt by means housed at its bottomand is divided" into two compartmentsby a; partition which contacts with'tlie'heated-bottom and is 5 itself heated thereby and extends upwardly therefrom, communication being provided between the compartments through an opening in the partition.
  • the thread guiding rolls are arranged on the plate member in the wax pot in such a manner that thread passing round them; lies close to the heatedbottom of the wax pot and parallel to it, 1 thus ensuring that it is acted on by wax which is maintained in a very fluid condition due to the close" presence of the heating means.
  • Figure 1 is a front view'of the said illustrative I .form'of wax pot; w e Figure 2 is a side viewpartly brokeniaway, of the wax pot seenin Figure 1-; v n ,o
  • Figure 3 is-a plan viewsof the wax pot showinga cover for the pot partially removed from over thezpot; and 1 Figure l is a front view of certain parts of the wax pot.
  • the wax pot come prises a metal casting i. '(see particularly Fig.,2)1 'of a substantially cubical shape with an open. top, of a suifieientsize to .hold'about two pounds of wax.
  • the waxpot' iscarrieduponthe-lower ends of a pair of sliding vertical rods 3. which pass through bearings a; fixed portion .of a cover jfo'r thepot.
  • Apair of electrical heating elementsfi; 5 are arrangeduwithin a thickened portion 1 (see Figure 2 )iof'the bottom of the wax pot which'portion extendsjdownwardly from the pot and these elements extend, near the back of the pot, parallel to theflatter across the, pot.
  • a verticalweb or partition 91 of. metal extends thereof and some distance infront of thelatter, and this web is joined to the sides and bottom .of the wax potand is so locatedin itthat it-lies substantially overthe forward end-of the downer wardly extending portion 1 ofthe bottom of the,
  • the web extends almunic ation between-theitwo parts of the pot separatedby the web, while allowing wax to flow freely from the' part of the wax pot in front of the Web into the part ofthe wax pot behind the web, prevents a circulationof the wax from tak ingplace around the frontand rear sides of the web,
  • the two parts into which the web divides the pot are of unedua1 capacity, theone 13 between the web and the rear wall of the pot forming a smaller or narrower compartment and hav ing a waxjholding capacity equal to less than half thatiof the larger compartment i5 lying between the web and-the front wall ofth'e pot.
  • rearward heating elementiiof the pair of heating elements lies in the lillustrative form of wax pot, directly underneath the-smaller compartment !3, so thatwax in this compartment will be heated rapidly. Further heating of wax in the smaller compartment 13 will take place due not only to the fact that the web 9 (which constitutes the front wall of this compartment) is heated by actual contactwith the thickened portion I of the bottom of the wax pot which houses the heating elements, but also due to the fact that the rear wall of the pot (which also comprises the rear wall of thissmaller compartment) and'als'o the sides of this compartment are'heated by direct conduction from the heating elements.
  • the smaller compartment is heated on all its sides and its bottom by'heating elements positioned directly beneath the smaller compartment and since it is narrow from front to back, "wax in itwill' melt quickly. Also due to the fact that the whole of the bottomv and sides of the wax pot including its front wall become directly heated by the elements 5, wax placed in the larger compartment. I5 will also be melted though more slowly thanthe wax in the smaller compartment i3, and can therefore flow into the latter through the opening H in the web S to replace wax used therefrom.
  • a relatively fixed supporting bracket member il' (see Figures 2 and 3) secured to the frame ofthe machine '(which may for example be a boot or shoe sewingmachine) with which the wax pot is to be used.
  • a feature of the present invention comprises'a plate 2 l (see Figures 1 'and l) which is sorr ewhat narrowerat the top than the bottom, lying substantially parallel to the back of the wax pot and having upwardly extendingpins 23 secured to its upper edge close to its opposite sides and these pins project upwardly through bearings in the fixedmember l 'i.
  • Short springs 25 are located on the pins 23 between the top of the plate 2! and the underside of the member H and urge the said plate'downwardly until itis arrested by contact between the member 61 and heads on the upper ends of said pins.
  • Thepl'ate 2! is so positioned on the member I1. and is of such size that when the wax pot' is in proper position to waxthread passing'through it, the said plate. is received wit.
  • This second stripper arrangement comprises a metallic block 6
  • the stripper block 6! is housed in a carrier member 6? (see Fig. l) which is secured to the plate 2
  • a stripper of the rubber block may conveniently be employed in place of the metallic stripper just described.
  • the wax pot is arranged to be lowered away from the plate 2
  • the two sliding vertical rods 3 upon which the wax pot is carried pass, as before stated, through vertical 1 bearings, indicated at 28, in the fixed member I! and the bearings each have a short pin 2'! (see Figs. 1 and 3) projecting horizontally and laterally therefrom and each of these pins has a roll 29 freely rotatable on it.
  • the left and right 1 hand walls of the wax pot have fixed pins 3
  • Sleeves 33 are freely pivoted on the pins 3
  • the sleeves 33 have formed on their inner ends cam members which have overhanging flanges 31 around their outer edges which extend horizontally inwards towards the wax pot.
  • the overhanging flanges subtend an angle at the axis of the sleeves approximately equal to a right angle and extend, before the sleeves arerotated in the manner hereinafter described, from a position substantially horizontally in front of the axis of the sleeves upwardly and rearwardly to a position just forward of the vertical plane containing the axis of the sleeve.
  • the radial distance of each of the overhanging flanges 31 from the axis of its sleeve decreases gradually from its upper end towards its lower and more forward end thus providing an overhanging snail cam the portion of which having the least radius is positioned on the lower portion of the cam in front of the sleeve.
  • Knurled hand wheels 39 are provided on the outer ends of the sleeves 33 by which the sleeves and cam members 35 may be rotated ina rearward direction (i. e. a counter clockwise direction looked at from the leftof the machine) when the wax pot has been lifted bodily so far by hand from a lowered inoperative position that the upper ends of the cam members are approximately level with the upper surfaces of the rolls 29 on the pins 27 which are secured in the fixed cover member ll.
  • is formed along the bottom of the plate 2
  • the sides of the said groove and ridge are somewhat steep so that any wax which may remain in or find its way into the groove after the wax pot has been lowered from the plate will, before it sets, tend to run down the sides of the groove and leave the internal faces of the groove clean.
  • the top of the ridge 43 is flattened a small amount so that a small gap exists between the top of the ridge and the apex of the groove 4
  • has projecting from one side upwardly and rearwardly from it near its upper end and centrally thereof a neck 45 (see particularly Figure 2) which projects through the mouth of the wax pot and is arranged to extend beneath a thread tension device with which the machine with which the wax pot is associated may be provided and around which tension device the thread passes from the wax pot.
  • the neck 45 is semi-cylindrical in section (its open side being directed towards the front of the wax potfand servesto catch and;- defiectintolthe wax pot through an opening; 47 in'theneck fany,
  • thermostat 69 is shown as located onxthe exterior of the bottom of the pot and is of the-bimetallic plate type; c of However a thermostat of: the gaseous, expansion type controlling by means of an expansible bellows a mercury vswitchmay be employed and in such :a case a liquid containing tube :of the thermostat could conveniently behoused in the wax pot within abore-provided for'it in :a vertical boss H (indicated in Fig. 1) I on'the plate 2 i.
  • the wax would tend to circulate through the openings and around the front and rear sides of the web 9, thus tending to lower the tempera ture of the waxin the smaller compartment which it is desired to maintain at a higher temperature than that of the wax in the larger compartment,
  • Thread waxing devices for sewing machines having, in combination, a fixed mounting memher, a waxpot movably mounted on said member, means for heating the bottom of the waxpot, thread guides within the wax potand a plate for supporting saidthread guides depending from .theifixed member downwardly into the wax 'pot and having heat'conducting'contact along one edge with thebottom or" the pct.
  • Thread waxing devices for. sewing machines having, in combination, v,a wax pot, means for heating thebottomof the wax pot, thread guides within the wax ':pot,, a plate having heat conducting. contact, along oneedge with the bottom of the -pot, and resilient meansifor maintaining into the'wa'x pot and contacting along oneiedge with the bottom of'the, pot for. supporting said thread guides, and resilient means interposed between the fixed member and the platefor urging the contacting edgefof the plate against the Wax pot.
  • Thread waxing devicesl-forsewing machines having, in combination, a wax pot,means for heating the bottom of the' wax' pot, thread guides within the wax pot, and a plate arranged with a grooved surface alongthebottom edge in heat conducting contact with a correspondingly shaped upstanding rib on the bottom of the pot for supporting said thread'guides, said plate and pot being relatively movable to permit access tothe thread guides.
  • Thread waxing-devices for sewing machines having-in combination, afixed mounting member, a'wax 'pot movably?
  • Threadwaxing devicesfor sewing machines having; in combination; a pot, means'for heating-the bottom of the wax pot, thread guides within” the wax pot, a plate for supporting said guides having heat conducting contact-along its lower. portion with the bottom of the pot, and a wax'stripper mounted on said plate, said plate and pot being relatively movable topermit access to the thread guides.
  • Thread waxing devices for sewing machines having, ini combination, a' wax pot, means for heating the bottom of the wax pot, thread guides within the wax pot, a plate having heat conducting contact along its lower portion with the bottom of the pot for supporting said thread guides, :andfa-neck extending fromfsaid plate arranged to catch and to deflect into the wax pot portions of-wax which arestripped from the thread as it leaves the pot, said plate and pot being relatively movable to permit access to the thread guides.
  • Thread waxing devices forsewingmachines having, in combination, a fixed mounting member, a Wax pot movably mounted on said memoer, means for-heating the bottom of the wax pot, thread guides within the wax pot, a plate mounted on said member having heat conducting contact along its lower portion with the bottom of the pot and extending upwardly and to one side of the pot to form a neck arranged to catch and to deflect into the wax pot any portions of wax which are stripped from the thread as it leaves the pct.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition in the wax pot forming two intercommunicating compartments of unequal size, means in thesmaller compartment for guiding thread through the open top into and from the wax containedin the pot, and a heat-ire,- element beneath the partition arranged to'heat the wax in the smaller compartment more rapidly than the wax in the larger compartment.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top arranged with a vertical partition to form two intercommunicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, electrical heating elemerits arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment, and a thermostat for controlling one or' said elements to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a partition in the wax pot forming two intercommunicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, electrical heating elements arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment, and a thermostat ior controlling one of said elements to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value, the other heating element not controlled by said thermostat being arranged to heat the partition directly.
  • Thread waxing devices for sewing machines having, in combination, a wax pot, an intermediate partition in the wax pot forming two compartments of unequal size, means in the smaller compartment for guiding thread through the wax contained in the pot, a heating element beneath the partition arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment and a passage provided at one point only through the partition arranged to provide adequate communication between the two compartments while preventing circulation of the wax around the partition from movement imparted by the thread.
  • Thread waxing devices for sewing machines having, in combination, a fixed mounting and cover member, having vertical bearings, vertical rods in the bearings, a wax pot connected to said rods for movement towards and from the mounting member, laterally extending hand wheels rotatable about horizontal axes mounted on the wax pot, and means comprising projections on the mounting member, and cams on said hand wheels for clamping the wax pot to the mounting member when the hand wheels are rotated.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition integral with the wax pot forming two inter-communicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, an electrical heating element arranged beneath the pot to heat the partition directly, a second heating element arranged beneath the smaller compartment, and a thermostat for controlling the second heating element to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition integral with the wax pot forming two inter-communicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, an electrical heating element arranged to heat the partition directly, and a second heat; ing element arranged beneath the smaller compartment.
  • Thread waxing devices for sewing machines having, in combination, a wax pot, means for heating the bottom of the wax pot, thread guides within the wax pot, a plate having heat conducting contact along one edge with the bottom of the pot for supporting said thread guides, and a thermostat carried by said plate for controlling the heating means, said plate and pot being relatively movable to permit access to the guides.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, means outside of the wax in the, pot for heating the bottom of the wax pot, a vertical plate extending downwardly into the pot, and means for guiding thread through the wax contained in the pot, comprising separated thread guides mounted on the plate near the lower edge of the plate to cause the thread to travel in an elongated path in proximity to and parallel with the bottom of the pot, said plate and pot being relatively movable to permit access to the thread guides.
  • Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a heating element housed in the bottom of the wax pot for heating the bottom of the pot, a vertical plate extending downwardly into the pot, and means for guiding thread through the wax contained in the pot comprising separated thread guides mounted on the plate near the lower edge of the plate to cause the thread to travel in an elongated path in proximity to and parallel with the portion of the bottom of the pot in proximity to said heating element, said plate and pot being relatively movable to permit access to the thread guides.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Aug. 20, 1935. F. c. CHOICE ET AL THREAD WAXING DEVICE Filed March 20, 1955 2 Sheets-Sheet l I Aug. 20, 1935. F. c. CHOICE ET AL THREAD WAXING DEVICE Filed March 20, 1953 2 Sheets-Sheet 2 Patented Aug. 26, 1935 TH'READ WAXING DEVICE Frank: Coleman" Qhoice and Rowland Augustus Lineham, Leicester,
England,
United Shoe. Machinery Corporation, Paterson,- I N; J.,a.corperation of New Jersey Application March 20, 1933, Serial No. 661,726
In-GreatBritain Apr-i128, 1932' 19 Claims. (01. 91-45 This inventionis concerned withdmprovements inor relating to thread waxing devices and is hereinafter illustratively described in connection with a thread 'waxingdeyicesuitabl'e for use on a boot or shoe sewing machine; 7
Sewing machines of various kinds are used in the boot andshoe industry for sewing the uppers and welts welted s'lioesto insoles; for sewing outsc-lesto thewelts of 'such shoes; forsewing the uppers of turnshoes directly to'- their soles and for sewing theout'sole of a Blake or'McKay shoe to the insole. Y
7 Sewing machines of the various kinds above indicated'are customarily'provided with wax-pots which are arranged tobe heated by suitable before it passes to the sewing instrumentalities of the machine.
The advantages derived from using waxed thread in'such sewing machines as have been mentioned are well understood and neednot' be particularized herein.
The thread guiding means aforementioned which constrain the thread topass through the melted wax inthe wax pot to become coated thereby usually comprise thread-guiding rolls which are supportedwithin the body of wax in the waxpot,
t is desirable thatthe'saidthread'guiding rolls should be heated by means additional to the hotwax' in order to ensure that they shall be maintained at an adequate temperature so that the wax on the thread-shall not be" cooled and hard ened by contact with them.
t is also: desirable that the wax-pots of such machines should be of suificient capacity to ac commodate a relatively large amount of wax so as tc'avoid the need for frequent replenishment, and that the means for meltingthe' wax should be capable of: melting the wax quickly (for example at the beginning'ofi a days work) withoutoverheating th'e'waxand thereby destroying some' of: its desirable'qualities.
When wax-pots or" the kind at present ingeneral use are arranged to accommodatea relative1ylarge supply oi'wax it becomes dificult' toarrange fcr'rapid melting of. the body of' the wax by heating. means external to the wax pot since aithcugh the wax lying closest to the heating means may melt comparativelyquickly yet, since the waxitselfiis hut' a poor conductor. oflh'eat, the wax lies out offc'on'tact' with the'walls of the wax pot melts but slowly. If; heating means in theinterior of the pot is made use of to melt the waxand is arranged t'ogive off a rela tively intense heat to melt the wax rapidly, there is a danger that the waxi'n the immediatevicinity B: of the heating means will become overheated and charred; while wax which is remote from the heating means will melt onlysl'owly.
One oft-he severalobjects of the present invention isto provide anovel and improved means 101 in a wax pot to obtain eflicient heating of" the thread guiding rolls wherrthe' Wax. pot issecured inits operative positiono I Another of the several objects of the present invention is to provide a novel and improved [5 formof Wax pot of relatively large capacity in which a portion of the waxin it-maybe rapidly melted without being overheated;
Another of" the several objects of the present invention is to provide a-noveliand improved forrn 20 of wax pot which shall berelativ'ely simple in'construction and efficientlinuse.
In an illustrative embodiment of the present invention hereinafter described, a wax pot is provided in which the thread guiding rolls are carried upon avertical plate arranged to contact with the heated bottom of the wax pot to be heated thereby, thus serving not only toheat" by conduction the thread guiding rolls which it carries, but also serving to heat the wax on' either side ofit; Means are also-'provided to clamp'the bottom: of the-wax potagainst the roll carrying plate. g l
Further, in the said illustrative embodiment the contacting faces of the plate andwax'pot are not plain but the'bott'om of the wax pot has a- /"-shaped' ribrunning along it on that portion against-whichthe bottom ofthe said platepresS'esand the' bottom-of the-plate has-a v shaped groove running along the-length of the-plate so that as 40 the wax pot israisedtO ardsthe plate; the rib onthe wax pot bottom enters into and presses against the sides of the-groove in" the plate-andestablishes firm contact therewith over a side area. Any wax which flows-within' the groove in the bottom of the plate-when the wax pot-is: lowered from the plate will; before it hardens and sets, tendto'run down' the sloping sides of the groove, thus leaving themclean.
In the illustrative-form of wax pot hereinafter described which" is specially suitable for use a boot or shoe sewing machine, the wax pot is heatedt by means housed at its bottomand is divided" into two compartmentsby a; partition which contacts with'tlie'heated-bottom and is 5 itself heated thereby and extends upwardly therefrom, communication being provided between the compartments through an opening in the partition. Also, in the said illustrative form t the thread guiding rolls are arranged on the plate member in the wax pot in such a manner that thread passing round them; lies close to the heatedbottom of the wax pot and parallel to it, 1 thus ensuring that it is acted on by wax which is maintained in a very fluid condition due to the close" presence of the heating means.
In order that the nature of the present invention may be more clearlylunder'stood, the.-illus' trative form of wax pot aforementionedwill nowbe described with referenceto' the accompany ing drawings.
' In the drawings:
- across the waxpotgenerally parallel tortheloack' Figure 1 is a front view'of the said illustrative I .form'of wax pot; w e Figure 2 is a side viewpartly brokeniaway, of the wax pot seenin Figure 1-; v n ,o
Figure 3 is-a plan viewsof the wax pot showinga cover for the pot partially removed from over thezpot; and 1 Figure l is a front view of certain parts of the wax pot.
In the ,saidillustrative form the wax pot come prises a metal casting i. '(see particularly Fig.,2)1 'of a substantially cubical shape with an open. top, of a suifieientsize to .hold'about two pounds of wax. ,The waxpot'iscarrieduponthe-lower ends of a pair of sliding vertical rods 3. which pass through bearings a; fixed portion .of a cover jfo'r thepot. Apair of electrical heating elementsfi; 5 are arrangeduwithin a thickened portion 1 (see Figure 2 )iof'the bottom of the wax pot which'portion extendsjdownwardly from the pot and these elements extend, near the back of the pot, parallel to theflatter across the, pot. A verticalweb or partition 91 of. metal extends thereof and some distance infront of thelatter, and this web is joined to the sides and bottom .of the wax potand is so locatedin itthat it-lies substantially overthe forward end-of the downer wardly extending portion 1 ofthe bottom of the,
pot in which the heating elements fi lie. The
bottom of this web,' gwhic h as before stated is joined to the bottom of thewaxpot. lies as shown in Figure 2, slightly forwardly'of the forwardv one oftheheating elements 5and becomes-heated by direct conduction; from the thickened portion,
of the bottom of the. potI'The web extends almunic ation between-theitwo parts of the pot separatedby the web, while allowing wax to flow freely from the' part of the wax pot in front of the Web into the part ofthe wax pot behind the web, prevents a circulationof the wax from tak ingplace around the frontand rear sides of the web, The two parts into which the web divides the pot are of unedua1 capacity, theone 13 between the web and the rear wall of the pot forming a smaller or narrower compartment and hav ing a waxjholding capacity equal to less than half thatiof the larger compartment i5 lying between the web and-the front wall ofth'e pot. The
rearward heating elementiiof the pair of heating elements lies in the lillustrative form of wax pot, directly underneath the-smaller compartment !3, so thatwax in this compartment will be heated rapidly. Further heating of wax in the smaller compartment 13 will take place due not only to the fact that the web 9 (which constitutes the front wall of this compartment) is heated by actual contactwith the thickened portion I of the bottom of the wax pot which houses the heating elements, but also due to the fact that the rear wall of the pot (which also comprises the rear wall of thissmaller compartment) and'als'o the sides of this compartment are'heated by direct conduction from the heating elements.
Therefore the smaller compartment is heated on all its sides and its bottom by'heating elements positioned directly beneath the smaller compartment and since it is narrow from front to back, "wax in itwill' melt quickly. Also due to the fact that the whole of the bottomv and sides of the wax pot including its front wall become directly heated by the elements 5, wax placed in the larger compartment. I5 will also be melted though more slowly thanthe wax in the smaller compartment i3, and can therefore flow into the latter through the opening H in the web S to replace wax used therefrom. A relatively fixed supporting bracket member il' (seeFigures 2 and 3) secured to the frame ofthe machine '(which may for example be a boot or shoe sewingmachine) with which the wax pot is to be used. extends forwardly over the pot forashort ;distance fromits rear and cooperates witha removable member t9 (which is shown in Figure 3 in a position swung somewhat away from over *the pot) freely mounted on a, pivot-20 carried in ears projecting fromthe'fixed member I! in front of the, left hand-one of saidrods'3 to constitute accver for the pot. 1
' A feature of the present invention comprises'a plate 2 l (see Figures 1 'and l) which is sorr ewhat narrowerat the top than the bottom, lying substantially parallel to the back of the wax pot and having upwardly extendingpins 23 secured to its upper edge close to its opposite sides and these pins project upwardly through bearings in the fixedmember l 'i. Short springs 25 are located on the pins 23 between the top of the plate 2! and the underside of the member H and urge the said plate'downwardly until itis arrested by contact between the member 61 and heads on the upper ends of said pins. Thepl'ate 2! is so positioned on the member I1. and is of such size that when the wax pot' is in proper position to waxthread passing'through it, the said plate. is received wit.
ing the smallerv compartment l3 of the pot and fairly close t'o' its rear wall. g p 7 The plate?! carrieson its forward side and near its lower corners two threadguiding rolls 69 extends a substantial. distance across the pot which are freely rotatable on pins 5i projecting forwardly fromthepl'ate. I The plate also carries on its forward side a third thread guiding roll 53 which is positioned slightly to one side of the plate and about half way up the height of the latter. The thread 5 5 is'arra'nge'd (as shown clearly in Figure l) to. pass into the wax pot through an openingformed partly "in the fixed part I! of the cover and partly in the movable part IQ of the cover and passes first around the right hand side of the third thread guiding roll 53. From this roll the thread passes across the plate to theguide roll 9 which is positioned near its leftv hand bottom corner and passes downwardly around this roll and then proceeds in 'a horizontal direction fairly close' to the heated stripper were not heated by any means.
mounting the stripper on the plate in this man- I pivot pin for the roll 53 passes and which stripper plate serves to remove any globules of wax which may be adh ring to the thread. From this stripper the threadpasses upwardly through a second stripper arrangement. This second stripper arrangement comprises a metallic block 6| (see 'Fig. 3 particularly) with a V-shaped opening running vertically in its inner face against which the thread is held pressed by a spring pressed plunger 83 having a vertical slot in it near its inner end through which the thread passes.
The cooperating faces on the plunger 63 and the block 6| gripthe thread between them with a pressure which is adjustable by means of a nut 55, threaded onto the forward end of the plunger 63, which can be rotated to adjust the strength of the plunger spring 66. The stripper block 6! is housed in a carrier member 6? (see Fig. l) which is secured to the plate 2| which carries the thread guiding rolls 49 and53 so that the stripper becomes directly heated by heat conducted to it from the plate and does not tend to congeal the wax on the thread as it would if the y ner the necessity for providing separate heating means for it is avoided. If desired, a stripper of the rubber block may conveniently be employed in place of the metallic stripper just described.
The wax pot is arranged to be lowered away from the plate 2| to allow the thread to be passed around the thread guiding rolls on the plate 2| when the wax pot is to be put into use and is also arranged to be lifted and clamped positively into contact with the bottom of the plate 2| after the thread has been placed around the thread guiding rolls. For this latter purpose the two sliding vertical rods 3 upon which the wax pot is carried pass, as before stated, through vertical 1 bearings, indicated at 28, in the fixed member I! and the bearings each have a short pin 2'! (see Figs. 1 and 3) projecting horizontally and laterally therefrom and each of these pins has a roll 29 freely rotatable on it. The left and right 1 hand walls of the wax pot have fixed pins 3| extending laterally therefrom near their upper edges below and parallel to the pins 21 on the fixed member I! (see Figure 1). Sleeves 33 are freely pivoted on the pins 3| and these sleeves are'secured against axial movement on the pins by heads on the outer ends of the latter. The sleeves 33 have formed on their inner ends cam members which have overhanging flanges 31 around their outer edges which extend horizontally inwards towards the wax pot. The overhanging flanges subtend an angle at the axis of the sleeves approximately equal to a right angle and extend, before the sleeves arerotated in the manner hereinafter described, from a position substantially horizontally in front of the axis of the sleeves upwardly and rearwardly to a position just forward of the vertical plane containing the axis of the sleeve. The radial distance of each of the overhanging flanges 31 from the axis of its sleeve decreases gradually from its upper end towards its lower and more forward end thus providing an overhanging snail cam the portion of which having the least radius is positioned on the lower portion of the cam in front of the sleeve. Knurled hand wheels 39 are provided on the outer ends of the sleeves 33 by which the sleeves and cam members 35 may be rotated ina rearward direction (i. e. a counter clockwise direction looked at from the leftof the machine) when the wax pot has been lifted bodily so far by hand from a lowered inoperative position that the upper ends of the cam members are approximately level with the upper surfaces of the rolls 29 on the pins 27 which are secured in the fixed cover member ll. When the wax pot'has been raised so far and the hand wheels 39 are rotated in the direction indicated, the action of the snail cams in riding over the rolls 29 will cause the wax pot to be lifted positively a small amount, thus causing the bottom of the wax pot to be pressed firmly against the bottom of the vertical plate 2| which, by reason of its being urged downwardly by the springs 25,
can yield upwardly somewhat as the bottom of the wax pot is forced against it. Once the cams have been caused to ride over the rolls 29 to lift the wax pot into firm contact with the bottom of the plate 2| they serve to clamp and retain the said wax pot pressed upwardly against the plate. Thus assurance is afforded that heat will be able to pass directly from the heated bottom of the wax pot to the plate 2| and the members carried by it.
In order to prevent wax which may settle on the bottom of the plate 2| when the wax pot is lowered out of contact with the plate 2| from preventing firm contact between the bottom of the plate and the bottom of the wax pot when the latter is once more raised to its operative position, an inverted V-shaped groove 4| is formed along the bottom of the plate 2| and an upstanding V-shaped rib or ridge 43 is provided on the bottom of the wax pot to engage within and press against the sides of the groove 4| as the wax pot is forced upwardly against the plate (see Figure 2). The sides of the said groove and ridge are somewhat steep so that any wax which may remain in or find its way into the groove after the wax pot has been lowered from the plate will, before it sets, tend to run down the sides of the groove and leave the internal faces of the groove clean. The top of the ridge 43 is flattened a small amount so that a small gap exists between the top of the ridge and the apex of the groove 4| into which any wax wiped upwardly along the sides of the groove in the plate as the ridge moves upwardly into contact with them may escape. It will be observed that the ridge and groove arrangement between the plate 2| and the bottom of the wax pot provides a relatively large area of contact, between the heated bottom of the wax pot and the plate, which ensures that an adequate supply of heat shall be conducted to the plate.
The plate 2| has projecting from one side upwardly and rearwardly from it near its upper end and centrally thereof a neck 45 (see particularly Figure 2) which projects through the mouth of the wax pot and is arranged to extend beneath a thread tension device with which the machine with which the wax pot is associated may be provided and around which tension device the thread passes from the wax pot. The neck 45 is semi-cylindrical in section (its open side being directed towards the front of the wax potfand servesto catch and;- defiectintolthe wax pot through an opening; 47 in'theneck fany,
portionsof wax'which are stripped from the thread by the said tension-device.
From whathas been said above, itwill derstood that the wax pot, of the. present illustrative embcdiment'can beloweredaway from the plate 2i when the-hand wheels 39uhavebeen roe tated forwardly to causeithegnoverhanging' flanges 3? of the cam members 35;to ride out of ,lengage+ ment with the rolls 29. 7 Whenit-ds desiredto raise the potv once more to operative position against and surrounding the pate-.21, itislifted bythe operatoruntil the uppers-ends oi-the over; hanging flanges 3? are level with the topsofthe rolls 29 and the hand wheelsfiil are then rotated rearwardly .to cause, by, the lifting; cam action of the cams on the rolls,ithfe V shaped ridgef43 on the bottom of the: pot ;,to engage within and e be pressed firmly against the sidesof the groove 41in the bottom of the plate-2|, thus ensuring that heat. will readily be conducted from the heated bottom of the wax pot to theplate and thermostat 69 is shown as located onxthe exterior of the bottom of the pot and is of the-bimetallic plate type; c of However a thermostat of: the gaseous, expansion type controlling by means of an expansible bellows a mercury vswitchmay be employed and in such :a case a liquid containing tube :of the thermostat could conveniently behoused in the wax pot within abore-provided for'it in :a vertical boss H (indicated in Fig. 1) I on'the plate 2 i. In order to mini-mizethe amount of'heat lostdue to radiation 'by the wax pot the latter is completely surrounded on all its sides and bot-'- tom by an aluminum casting 13 which islar'ger than the 1ot, 'the space between the casting l3 and the pot being filled with lag'wool or felt.
As has been heretofore S a th lsvvpro' tom edge in heat conducting contact with a vided in the. web 5 only one opening I I, the reason for this beingas follows. 'The rotation of the thread guiding rolls 4 9 and 53 caused by drawing thread through 'the wax pot tends to setup a circulatory effect in the wax and were there two openings formed in opposite sides of the web,
the wax. would tend to circulate through the openings and around the front and rear sides of the web 9, thus tending to lower the tempera ture of the waxin the smaller compartment which it is desired to maintain at a higher temperature than that of the wax in the larger compartment,
By providing only oneopening-l I in the web, circulation of wax around the web is prevented while still providing adequate communication between the two compartments.
The nature and scope of the invention, having been indicated, and a machine-embodying the said plate andpot beingrelatively movable to permit access to the thread guides.
2. Thread waxing devices for sewing machines having, in combination, a fixed mounting memher, a waxpot movably mounted on said member, means for heating the bottom of the waxpot, thread guides within the wax potand a plate for supporting saidthread guides depending from .theifixed member downwardly into the wax 'pot and having heat'conducting'contact along one edge with thebottom or" the pct.
3. Thread waxing devices for. sewing machines having, in combination, v,a wax pot, means for heating thebottomof the wax pot, thread guides within the wax ':pot,,a plate having heat conducting. contact, along oneedge with the bottom of the -pot, and resilient meansifor maintaining into the'wa'x pot and contacting along oneiedge with the bottom of'the, pot for. supporting said thread guides, and resilient means interposed between the fixed member and the platefor urging the contacting edgefof the plate against the Wax pot. e '5. Thread waxing devicesl-forsewing machines having, in combination, a wax pot,means for heating the bottom of the' wax' pot, thread guides within the wax pot, and a plate arranged with a grooved surface alongthebottom edge in heat conducting contact with a correspondingly shaped upstanding rib on the bottom of the pot for supporting said thread'guides, said plate and pot being relatively movable to permit access tothe thread guides.- 7 v 6. Thread waxing-devices for sewing machines having-in combination, afixed mounting member, a'wax 'pot movably? mounted on saidmem ber, means for heating the'bottom of the wax pot, thread guides within the'wax pot, a plate on the mounting member arranged with an in verted 'v-sliaped groov'e s'urface" along the botcorrespondingly shapedupstanding rib OIlYthE bottom of the pot for supporting said thread 7 guides, and means for forcing the wax pot up- Wa'rdlyf'again'st the'plate.
'7. Threadwaxing devicesfor sewing machines having; in combination; a pot, means'for heating-the bottom of the wax pot, thread guides within" the wax pot, a plate for supporting said guides having heat conducting contact-along its lower. portion with the bottom of the pot, and a wax'stripper mounted on said plate, said plate and pot being relatively movable topermit access to the thread guides. i V
'8. Thread waxing devices for sewing machines having, ini combination, a' wax pot, means for heating the bottom of the wax pot, thread guides within the wax pot, a plate having heat conducting contact along its lower portion with the bottom of the pot for supporting said thread guides, :andfa-neck extending fromfsaid plate arranged to catch and to deflect into the wax pot portions of-wax which arestripped from the thread as it leaves the pot, said plate and pot being relatively movable to permit access to the thread guides.
9. Thread waxing devices forsewingmachines having, in combination, a fixed mounting member, a Wax pot movably mounted on said memoer, means for-heating the bottom of the wax pot, thread guides within the wax pot, a plate mounted on said member having heat conducting contact along its lower portion with the bottom of the pot and extending upwardly and to one side of the pot to form a neck arranged to catch and to deflect into the wax pot any portions of wax which are stripped from the thread as it leaves the pct.
10. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition in the wax pot forming two intercommunicating compartments of unequal size, means in thesmaller compartment for guiding thread through the open top into and from the wax containedin the pot, and a heat-ire,- element beneath the partition arranged to'heat the wax in the smaller compartment more rapidly than the wax in the larger compartment.
11. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top arranged with a vertical partition to form two intercommunicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, electrical heating elemerits arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment, and a thermostat for controlling one or' said elements to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value.
12. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a partition in the wax pot forming two intercommunicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, electrical heating elements arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment, and a thermostat ior controlling one of said elements to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value, the other heating element not controlled by said thermostat being arranged to heat the partition directly.
13. Thread waxing devices for sewing machines having, in combination, a wax pot, an intermediate partition in the wax pot forming two compartments of unequal size, means in the smaller compartment for guiding thread through the wax contained in the pot, a heating element beneath the partition arranged to heat the wax in the smaller compartment more rapidly than the wax in the larger compartment and a passage provided at one point only through the partition arranged to provide adequate communication between the two compartments while preventing circulation of the wax around the partition from movement imparted by the thread.
14. Thread waxing devices for sewing machines having, in combination, a fixed mounting and cover member, having vertical bearings, vertical rods in the bearings, a wax pot connected to said rods for movement towards and from the mounting member, laterally extending hand wheels rotatable about horizontal axes mounted on the wax pot, and means comprising projections on the mounting member, and cams on said hand wheels for clamping the wax pot to the mounting member when the hand wheels are rotated.
15. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition integral with the wax pot forming two inter-communicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, an electrical heating element arranged beneath the pot to heat the partition directly, a second heating element arranged beneath the smaller compartment, and a thermostat for controlling the second heating element to cut it out of operation when the temperature of the wax in the pot has reached a predetermined value.
16. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a vertical partition integral with the wax pot forming two inter-communicating compartments of unequal size, means in the smaller compartment for guiding thread through the open top into and from the wax contained in the pot, an electrical heating element arranged to heat the partition directly, and a second heat; ing element arranged beneath the smaller compartment.
17. Thread waxing devices for sewing machines having, in combination, a wax pot, means for heating the bottom of the wax pot, thread guides within the wax pot, a plate having heat conducting contact along one edge with the bottom of the pot for supporting said thread guides, and a thermostat carried by said plate for controlling the heating means, said plate and pot being relatively movable to permit access to the guides.
18. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, means outside of the wax in the, pot for heating the bottom of the wax pot, a vertical plate extending downwardly into the pot, and means for guiding thread through the wax contained in the pot, comprising separated thread guides mounted on the plate near the lower edge of the plate to cause the thread to travel in an elongated path in proximity to and parallel with the bottom of the pot, said plate and pot being relatively movable to permit access to the thread guides.
19. Thread waxing devices for sewing machines having, in combination, a wax pot having an open top, a heating element housed in the bottom of the wax pot for heating the bottom of the pot, a vertical plate extending downwardly into the pot, and means for guiding thread through the wax contained in the pot comprising separated thread guides mounted on the plate near the lower edge of the plate to cause the thread to travel in an elongated path in proximity to and parallel with the portion of the bottom of the pot in proximity to said heating element, said plate and pot being relatively movable to permit access to the thread guides.
FRANK COLEMAN CHOICE. ROWLAND AUGUSTUS LINEHAM.
US661726A 1932-04-28 1933-03-20 Thread waxing device Expired - Lifetime US2011615A (en)

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GB12204/32A GB400649A (en) 1932-04-28 1932-04-28 Improvements in or relating to thread waxing devices

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422281A (en) * 1944-02-09 1947-06-17 Western Electric Co Apparatus for insulating conductors
US2693429A (en) * 1950-06-03 1954-11-02 Owens Corning Fiberglass Corp Method and apparatus for coating filaments

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3121051A1 (en) * 1981-05-27 1982-12-23 Hacoba Textilmaschinen Gmbh & Co Kg, 5600 Wuppertal Method and apparatus for drawing off the thread from thread feed bobbins, especially from conical sewing-thread bobbins

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422281A (en) * 1944-02-09 1947-06-17 Western Electric Co Apparatus for insulating conductors
US2693429A (en) * 1950-06-03 1954-11-02 Owens Corning Fiberglass Corp Method and apparatus for coating filaments

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FR754812A (en) 1933-11-14
DE596633C (en) 1934-05-07

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