US1739294A - Polishing disk - Google Patents

Polishing disk Download PDF

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Publication number
US1739294A
US1739294A US208565A US20856527A US1739294A US 1739294 A US1739294 A US 1739294A US 208565 A US208565 A US 208565A US 20856527 A US20856527 A US 20856527A US 1739294 A US1739294 A US 1739294A
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US
United States
Prior art keywords
polishing disk
polishing
felt sheet
disk
felt
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
US208565A
Inventor
Despret Georges Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France
Original Assignee
Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France
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Filing date
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Application filed by Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France filed Critical Compagnies Reunies des Glaces et Verres Speciaux du Nord de la France
Application granted granted Critical
Publication of US1739294A publication Critical patent/US1739294A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/147—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention relates to improvements in disks used for polishing glass plates.
  • the characteristic features of the invention will be clearly set forth in the following description which refers to the appended drawing in which:
  • Fig. l shows the construction of the polishing disk presently in use in glassworks and Fig. 2 shows the improved polishing disk according to this invention.
  • the felt sheet F which receives the emery dust and is adapted to rub upon the glass plate, is pressed by means of a hydraulic press upon the cast iron body P of the disk, and is maintained thereon by a thin outer iron hoop C.
  • the felt disk consisting of hair, mixed or not with wool, its strength is due to the mingling of the hair produced byY a suitable foltering motion followed by a fulling motion; when the felt is pressed upon the body of the polishing disk the outer libres are drawn in the part A, so that the mingling of the hair is in part destroyed and a region of smaller strength is created at A. This is evidenced by the fact that in such construe-- tion, the felt. disk becomes rapidly split at A and is then out of use.
  • the polishing work requires that the felt sheet be freely secured upon the cast iron body of the polishing disk, so that, after each polishing operation, the felt sheet, which is choked by the emery dust, may be cleansed by water circulating between the felt sheet and the cast iron body, so as to remove the emery dust.
  • other means such as gluing, previously employed for securing the felt sheet, and with which the life of the felt sheet was preserved, were not satisfactory as regard the quality of the polishing work performed therewith.
  • the pressing operation is dispensed with and the felt sheet is however freely secured upon the polishing disk.
  • rPhe edges of the polishing disk P 2 are therefore turned up so as to assume an oblique position and to allow of securing the felt sheet by means of bolts B, the heads whereof are sufficiently distant from the surface of friction so as to prevent their Contact with the glass plate, even when the felt sheet 1s worn out.
  • the felt sheet is merely placed upon the polishing disk, without any pressing, i. e. without having any of its parts drawn and weakened, and it can be readily cleansed and the emery removed therefrom. It is even feasible to remove the felt sheet by unscrewing the bolts B, in view of a thorough cleansing.
  • Polishing disk comprising a metal body having its edges turned up obliquely alongv its whole periphery, a felt sheet merely applied upon said body and bolts for securingl the edges of said feltsheet to said edges of the body along the whole periphery of this latter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

G. P. DESPRET POLISHING DISK Dec. 10,v 1929.
'Filed July 26. 1927 .Huur/wy.
Patented Dec. 10, 1929 UNITED STATES PATENT OFFICE GEORGES PAUL DESPRET, OF PARIS, FRANCE, ASSIGNOR T0 COMPAGNIES RUNIES DES GLACES & VERRES SPECIAUX DU NORD DE LA FRANCE, OF BOUSSOIS S/SAWIBRE.
FRANCE POLISHIN Gr DISK Application filed July 26, 1927, Serial No. 208,565, and in France .Tuly 12, 1927.
The present invention relates to improvements in disks used for polishing glass plates. The characteristic features of the invention will be clearly set forth in the following description which refers to the appended drawing in which:
Fig. l shows the construction of the polishing disk presently in use in glassworks and Fig. 2 shows the improved polishing disk according to this invention.
As shown in Fig. 1 in the usual construction of the polishing disks to which a rotary motion in a horizontal plane is imparted, the felt sheet F, which receives the emery dust and is adapted to rub upon the glass plate, is pressed by means of a hydraulic press upon the cast iron body P of the disk, and is maintained thereon by a thin outer iron hoop C.
rThis construct-ion offers the following drawback: The felt disk consisting of hair, mixed or not with wool, its strength is due to the mingling of the hair produced byY a suitable foltering motion followed by a fulling motion; when the felt is pressed upon the body of the polishing disk the outer libres are drawn in the part A, so that the mingling of the hair is in part destroyed and a region of smaller strength is created at A. This is evidenced by the fact that in such construe-- tion, the felt. disk becomes rapidly split at A and is then out of use.
It is however difficult to substitute any other means for securing the felt sheet upon the polishing disk. As a matter of fact the polishing work requires that the felt sheet be freely secured upon the cast iron body of the polishing disk, so that, after each polishing operation, the felt sheet, which is choked by the emery dust, may be cleansed by water circulating between the felt sheet and the cast iron body, so as to remove the emery dust. For this reason, other means, such as gluing, previously employed for securing the felt sheet, and with which the life of the felt sheet was preserved, were not satisfactory as regard the quality of the polishing work performed therewith.
According to the present invention the pressing operation is dispensed with and the felt sheet is however freely secured upon the polishing disk.
rPhe edges of the polishing disk P 2) are therefore turned up so as to assume an oblique position and to allow of securing the felt sheet by means of bolts B, the heads whereof are sufficiently distant from the surface of friction so as to prevent their Contact with the glass plate, even when the felt sheet 1s worn out.
The felt sheet is merely placed upon the polishing disk, without any pressing, i. e. without having any of its parts drawn and weakened, and it can be readily cleansed and the emery removed therefrom. It is even feasible to remove the felt sheet by unscrewing the bolts B, in view of a thorough cleansing.
rIfhe life of the felt sheet is thereby doubled, while a very satisfactory polishing may however be obtained.
Having now described my invention, what I claim as new and desire to secure by Letters Patent is:
Polishing disk comprising a metal body having its edges turned up obliquely alongv its whole periphery, a felt sheet merely applied upon said body and bolts for securingl the edges of said feltsheet to said edges of the body along the whole periphery of this latter.
In testimony whereof I have signed my name to this specification.
GEORGES PAUL DESPRET.
US208565A 1927-07-12 1927-07-26 Polishing disk Expired - Lifetime US1739294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR637530X 1927-07-12

Publications (1)

Publication Number Publication Date
US1739294A true US1739294A (en) 1929-12-10

Family

ID=32606106

Family Applications (1)

Application Number Title Priority Date Filing Date
US208565A Expired - Lifetime US1739294A (en) 1927-07-12 1927-07-26 Polishing disk

Country Status (4)

Country Link
US (1) US1739294A (en)
DE (1) DE501670C (en)
FR (1) FR637530A (en)
GB (1) GB293783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965905A (en) * 1989-03-20 1990-10-30 The Chamberlain Group Apparatus for waxing and polishing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965905A (en) * 1989-03-20 1990-10-30 The Chamberlain Group Apparatus for waxing and polishing

Also Published As

Publication number Publication date
GB293783A (en) 1928-08-16
FR637530A (en) 1928-05-02
DE501670C (en) 1930-07-03

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