US3551957A - Method and apparatus for molding ice skates - Google Patents

Method and apparatus for molding ice skates Download PDF

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Publication number
US3551957A
US3551957A US773560A US3551957DA US3551957A US 3551957 A US3551957 A US 3551957A US 773560 A US773560 A US 773560A US 3551957D A US3551957D A US 3551957DA US 3551957 A US3551957 A US 3551957A
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US
United States
Prior art keywords
mold
blade
cavity
sole
skate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US773560A
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English (en)
Inventor
Horst Ramm
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Individual
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Individual
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Publication date
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Publication of US3551957A publication Critical patent/US3551957A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts

Definitions

  • a method and apparatus for making ice skates comprises positioning the flanged portions of the skate blade which are adapted to be attached to the shoe sole of the skate in a mold cavity and also positioning the bottom of the skate shoe top in the cavity, the blade flanged portions being positioned relative to the shoe top.
  • the shoe sole is formed by introducing a composition into the cavity, embedding the flanged portion of the blade and the bottom of the shoe top in the sole.
  • This invention relates to apparatus for making ice skates and, more particularly, to apparatus for making ice skates in which the blades and shoe tops are directly cast in embedded relationship with the sole of the ice skate shoe.
  • the soles of the skates formed in accordance with the principles of my invention are formed by directly casting the sole to the shoe top and the upper ends or flanged portions of the blades, the flanged portions being completely embedded in the sole material and maintained at a fixed and exact position and distance from the shoe top.
  • the apparatus of my invention comprises a two part mold having a cavity formed therein such that when the mold parts are positioned together the cavity takes the shape of the sole of the skate shoe.
  • the mold includes means for receiving and positioning the skate blade with its flanged portion in the cavity and the cavity also includes an opening therein for positioning the bottom of the skate shoe top therein.
  • Means is provided 3,551,957 Patented Jan. 5, 1971 a CC for introducing a sole forming composition into the cavity whereby a shoe sole with the shoe top and blade flanges firmly embedded therein is formed.
  • FIG. 1 is a side elevation view of one mold half of my invention with a view onto the mold junction plane;
  • FIG. 2 is a cross sectioned end elevation view of the mold taken substantially along line 2-2 of FIG. 1 and additionally showing another embodiment of injection passages;
  • FIG. 3 is a cross sectioned elevation view of One embodiment of a skate blade holding device
  • FIG. 4 is a side elevation view of the holding device of FIG. 3;
  • FIG. 5 is a cross sectioned plan view of the two mold halves and the holding device of FIGS. 3 and 4;
  • FIG. 6 is a cross sectioned elevation view of another embodiment of the skate blade holding device.
  • FIG. 7 is a side elevation view of the holding device of FIG. 6.
  • a mold which is constructed in two parts, having mold halves 3 and 4 which are set together in a suitable installation (not shown), such as a mold jig, in such a manner that they may be easily shifted way from one another in an opening motion and toward one another in a closing motion.
  • a suitable installation such as a mold jig
  • centering pins 6 which extend in the junction plane of the mold halves from one mold half and which are adapted to enter an appropriate bore in the other mold half.
  • a recess is located at the upper side of each of the two mold halves which, when the mold halves are closed, combine to form a mold cavity 1.
  • the cavity is closed by a shoe top 2 indicated by dotted lines, which is mounted on a tree or other suitable form to maintain the shoe top in its ultimately desired shape as the sole forming composition is introduced into the mold cavity to form an intimate bond with the bottom of the shoe top.
  • the sole composition material is injected into the cavity through a passage 5 in the mold.
  • the passage 5 is intersected over its length by the junction plane of the mold halves to facilitate cleaning.
  • the injection passage may also be formed by a distribution passage running approximately parallel to the mold cavity 1 and which is' connected with the mold cavity via several inwardly directed passages.
  • An example of the latter construction is shown as D in FIG. 2. Where the distribution passage and inwardly directed passages are provided, the junction plane of the two mold halves will not bisect the passages.
  • each of the mold halves 3 and 4 are preferably constructed in two additional separable parts along a second junction plane D in FIG. 2, so that the distribution passage and inwardly directed passages are accessible for cleaning after the injection process is completed.
  • the junction plane of the two mold halves longitudinally substantially bisects the shoe top 2 and cavity 1 and intersects a cavity 7 positioned below the mold cavity 1 in the mold halves.
  • Cavity 7 is connected with mold cavity 1 by several connecting passages 8.
  • the skate blade 9 is received in cavity 7 in such a manner that its posts 10 extend into mold cavity 1 through the connecting passages 8.
  • the seal 12 also acts to provide exact lateral placement and positioning of the posts 10 in the connecting passages.
  • the skate blade 9 is laid in such a manner that it first of all temporarily held in the junction plane of the one of the two mold halves 3 when the mold is open.
  • two eccentric screws 13 and an adhesive magnet 14 are provided on mold half 3 intermediate the ends of the blade 9.
  • the skate blade 9 is placed on the eccentric screws 13 and the position of the fastening flanges 11 in mold cavity 1 is adjusted by turning the eccentric screws 13 such that during the sole molding process the flanges are at the desired distance relative to the bottom of the shoe top 2 and properly positioned in the cavity 1.
  • Such distance and location relative to the shoe top becomes fixed after the sole has been formed in its final hardened state.
  • the fastening flanges 11 usually include apertures 11' for accommodating the conventional fastening screws, rivets, or the like. These apertures are not only useful, but it is preferred to even enlarge the apertures 11' somewhat and/or to increase their number so that the sole material flows into and positively fills the apertures to firmly embed the fastening flanges in the sole material. Also, since the flange 11 is spaced from the cavity walls and the shoe top, the sole material completely surrounds the flange itself to insure a rigid durable placement of the attached skate blade.
  • the adhesive magnet 14 acts to only temporarily hold the skate blade abainst the side of mold half 3 when the mold is in the opened state.
  • the skate blade is accurately positioned and held through the guidance imparted upon the posts 10 in the connecting passages 8, and as soon as the mold is opened again after the sole injection is terminated, the adhesive magnet releases the skate blade so that the two mold halves 3 and 4 can easily move away from the skate blade now connected with the shoe.
  • a small movement of flexure is exercised upon the blade.
  • FIGS. 3, 4, and 5 may be used.
  • the holding device comprises a sheet metal holder 15 which is rotatably fastened to mold half 3 with a screw 16 and two cup springs 17 which exert a force which tends to maintain the holder 15 in its instant position and in positioning contact with the blade 9.
  • a sheet meal tab 18 is mounted on mold half 4 enters a corresponding slit 19 in mold half 3, as viewed in FIG. 5.
  • FIGS. 6 and 7 A particularly simple and inexpensive holding device for the skate blade may be employed, such device being shown in FIGS. 6 and 7.
  • a helical spring wire 21. is bent as shown and fastened to mold 3 by means of a screw 22.
  • the spring wire exerts a force on the blade substantially perpendicular to the junction plane.
  • the holding device springs back to release the blade.
  • Apparatus for forming an ice skate having the blade of the skate embedded in the sole of the ice skate shoe thereof, comprising a mold separable into a first half and a second half along a junction plane, a recess defined in each of the halves, the recesses being constructed and arranged to form a cavity having walls substantially conforming in shape to the shoe sole when the mold halves are positioned next to each other along the junction plane,
  • blade positioning means adjacent the junction of plane for receiving the blade and positioning the flanged portion of the blade in the cavity in spaced relation to the cavity walls and the bottom of the shoe top, said blade positioning means including at least one passage communicating with said cavity, and
  • junction plane substantially bisects the cavity along its longitudinal length.
  • said blade positioning means includes variable support means extendtherein for selectively adjusting the position of the flanged portion of the blade in the cavity.
  • the apparatus of claim 1 including holding means for holding the blade against one of the halves of the mold when the mold halves are separated.
  • said holding means comprises a magnet adhesively mounted on said one mold half.
  • said holding means comprises spring means normally exerting a spring force on the blade in a direction substantially perpendicular to the junction plane.
  • said spring means comprises at least one helical spring Wire.
  • the apparatus of claim 1 including sealing means in said passage for restraining the passage of the composition from the cavity.
  • said means for introducing the composition comprises a passage communicating between at least one of the recesses and the exterior surface of the mold and said junction plane intersects said passage over a major portion of its length.
  • a passage communicates between the recess and the exterior surface comprises a distribution passage extending substantially parallel to the cavity and a plurality of inwardly directed second junction plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US773560A 1967-11-07 1968-11-05 Method and apparatus for molding ice skates Expired - Lifetime US3551957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST027544 1967-11-07

Publications (1)

Publication Number Publication Date
US3551957A true US3551957A (en) 1971-01-05

Family

ID=7461464

Family Applications (1)

Application Number Title Priority Date Filing Date
US773560A Expired - Lifetime US3551957A (en) 1967-11-07 1968-11-05 Method and apparatus for molding ice skates

Country Status (4)

Country Link
US (1) US3551957A (xx)
DE (1) DE1729360B2 (xx)
FR (1) FR1590825A (xx)
NL (1) NL165407C (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117144A (xx) * 1973-03-08 1974-11-08
US3910748A (en) * 1972-03-23 1975-10-07 Turner Mfg Co Plastic mold construction
US3925529A (en) * 1969-06-09 1975-12-09 Wright & Co Inc E T Method for making shoes with cleated bottoms
US4155687A (en) * 1977-07-15 1979-05-22 Erich Grunner Apparatus for molding tires with a reinforcement below the tread surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295655A (en) * 1979-07-18 1981-10-20 Brookfield Athletic Shoe Company, Inc. Roller skating shoe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1476115A (fr) * 1966-04-14 1967-04-07 Ensemble talon-cambrillon, chaussure fabriquée avec cet ensemble, et procédé de fabrication de cette chaussure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925529A (en) * 1969-06-09 1975-12-09 Wright & Co Inc E T Method for making shoes with cleated bottoms
US3910748A (en) * 1972-03-23 1975-10-07 Turner Mfg Co Plastic mold construction
JPS49117144A (xx) * 1973-03-08 1974-11-08
US4155687A (en) * 1977-07-15 1979-05-22 Erich Grunner Apparatus for molding tires with a reinforcement below the tread surface

Also Published As

Publication number Publication date
DE1729360A1 (de) 1972-07-27
DE1729360B2 (de) 1974-07-04
NL165407C (nl) 1981-04-15
FR1590825A (xx) 1970-04-20
DE1729360C3 (xx) 1975-02-13
NL6815525A (xx) 1969-05-09

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