US1743999A - Method of making fan guards - Google Patents

Method of making fan guards Download PDF

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Publication number
US1743999A
US1743999A US306253A US30625328A US1743999A US 1743999 A US1743999 A US 1743999A US 306253 A US306253 A US 306253A US 30625328 A US30625328 A US 30625328A US 1743999 A US1743999 A US 1743999A
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United States
Prior art keywords
grooves
fan guards
guard
making fan
guard wires
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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
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US306253A
Inventor
Charles T Hatch
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.)
Union Steel Products Co
Original Assignee
Union Steel Products Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Union Steel Products Co filed Critical Union Steel Products Co
Priority to US306253A priority Critical patent/US1743999A/en
Application granted granted Critical
Publication of US1743999A publication Critical patent/US1743999A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/268—Making other particular articles wheels or the like wheels having spokes
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49327—Axial blower or fan

Definitions

  • Fig. 1 is a front view of my improved fan guard.
  • FIG. 2 is a detail section on line 2--2 of Fig. 3 is a front View of the center disk as formed prior to assembly with the guard wires.
  • Fig. 4 is an enlarged detail View on a line corresponding to line 4-4 of Fig. 3 showing the relation of the guard wires to the center disk prior to the electric welding operation.
  • Fig. 5 is an enlarged detail on line 5-5 of Fig. 2.
  • my improved fan guard comprises a rim 1, a plurality of radially disposed guard Wires 2 which are bent, largely for the sake of appearance, and the center disk 3 to which the inner ends of the guard wires are secured.
  • This center disk 3 is formed as a sheet metal stamping, a plurality of radial ribs 4 being struck up therefrom providing radial grooves 5 having flat bottoms 6.
  • the grooves 6' are of such size that the guard wires 2 may be arranged therein so that they contact only with the bottoms of the grooves, thus providing a line contact for the guard wires and the center disk, insuring a satisfactory weld when the current is applied and uniform welding of all the guard wires.
  • fan guards consisting of forming a center disk with struck-up radial portions providing radial grooves, said grooves having flat bottoms, the disk being notched at the ends of the grooves and the portions of the edges be tween the notches turned inwardly, disposing guard wires in said grooves so that they contact prior to welding only with the flat bottoms thereof, and uniting by electric welds.
  • fan guards consisting of forming a center disk with struck-up radial portions providing radial grooves said grooves having fiat bottoms, disposing guard wires in said grooves so that they contact prior to welding only with the flat bottoms thereof, and uniting by electric welds.
  • This arrangement permits/the metal as it 7 fuses to flow out and form a wide bond between the disk and the guard wires as is indicated in Fig. 5.
  • the center disks have notches 7 therein at the outer ends of the grooves, the segmental portions 8 between these notches being turned inwardly provid-

Description

Jan. 14, 1930. HATCH METHOD OF MAKING FAN GUARDS Filed Sept 15, 1928 I INVENTOR Z/mr/ra Z flafc/r Patented Jan. 14, 1930 UNITED STATES PATENT OFFICE GEARLES T. HATCH, F ALBION, MICHIGAN, ASSIGNOR TO UNION STEEL PRODUCTS COMPANY, OF ALBION, MICHIGAN METHOD OF MAKING FAN GUARDS Applicationv filed September 15, 1928. Serial No. 306,253.-
strong and rigid.
Objects pertaining to details and economies I of my invention will definitely appear from the description to follow.
A fan guard embodying the features of my improvements is clearly illustrated in the accompanying drawing in which:
Fig. 1 is a front view of my improved fan guard.
F Fig. 2 is a detail section on line 2--2 of Fig. 3 is a front View of the center disk as formed prior to assembly with the guard wires.
Fig. 4 is an enlarged detail View on a line corresponding to line 4-4 of Fig. 3 showing the relation of the guard wires to the center disk prior to the electric welding operation.
Fig. 5 is an enlarged detail on line 5-5 of Fig. 2.
As illustrated in the accompanying drawing, my improved fan guard comprises a rim 1, a plurality of radially disposed guard Wires 2 which are bent, largely for the sake of appearance, and the center disk 3 to which the inner ends of the guard wires are secured. This center disk 3 is formed as a sheet metal stamping, a plurality of radial ribs 4 being struck up therefrom providing radial grooves 5 having flat bottoms 6. r
The grooves 6' are of such size that the guard wires 2 may be arranged therein so that they contact only with the bottoms of the grooves, thus providing a line contact for the guard wires and the center disk, insuring a satisfactory weld when the current is applied and uniform welding of all the guard wires.
ing supporting flanges 9 between the guard wires and also giving the appearance of weight or thickness to the center disk.
By this means I am able to produce fan guards very rapidly and economically, and the structures are strong, rigid and attractive 1n appearance.
Having thus described my invention what I claim as new and desire to secure by Letters Patent is:
1. The method of manufacturing fan guards consisting of forming a center disk with struck-up radial portions providing radial grooves, said grooves having flat bottoms, the disk being notched at the ends of the grooves and the portions of the edges be tween the notches turned inwardly, disposing guard wires in said grooves so that they contact prior to welding only with the flat bottoms thereof, and uniting by electric welds.
2. The method of manufacturing fan guards consisting of forming a center disk with struck-up radial portions providing radial grooves said grooves having fiat bottoms, disposing guard wires in said grooves so that they contact prior to welding only with the flat bottoms thereof, and uniting by electric welds.
In witness whereof I have hereunto set my hand.
CHARLES T. HATCH.
This arrangement permits/the metal as it 7 fuses to flow out and form a wide bond between the disk and the guard wires as is indicated in Fig. 5. The center disks have notches 7 therein at the outer ends of the grooves, the segmental portions 8 between these notches being turned inwardly provid-
US306253A 1928-09-15 1928-09-15 Method of making fan guards Expired - Lifetime US1743999A (en)

Priority Applications (1)

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US306253A US1743999A (en) 1928-09-15 1928-09-15 Method of making fan guards

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Application Number Priority Date Filing Date Title
US306253A US1743999A (en) 1928-09-15 1928-09-15 Method of making fan guards

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US1743999A true US1743999A (en) 1930-01-14

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