US1290721A

US1290721A - Guard for rotary fans and the like.

Info

Publication number: US1290721A
Application number: US19550017A
Authority: US
Inventors: Charles H J Dilg
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-10-09
Filing date: 1917-10-09
Publication date: 1919-01-07
Anticipated expiration: 1936-01-07

Description

C. H. J. DILG.

GUARD FOR ROTARY FANS AND THE LIKE- APPLICATION FILED OCT. 9. 191;.

1,290,721. rammed 1311.7,1919.

WITNESSES:

ATTORNEYS To'j altlwhom it may 6mm. v

fmflnpfsriiirns PAENT, OFFICE.

' .J CH'ARYLF n. alibi 1.6.1103 NEW roux; N-LYI cnannron Ronny Fans Ann THE LIKE. I

"Application fil ed October 8,'1917.- Serial No. 195,590.

- Be'it known tha -I, CHARLES Dim,

a citizen of the United States, residing at. the city of New York, in the borough of Manhattan and State of New York, have invented certainv new and useful Improvements in Guards for Rotary Fans and the clear,

like, of which the following is a' full, and exact description.

My invention relates to guards for rotary fans and the like. An ob1ect of my invention is to provide a guard which will be light and of simple construction and convenient to assemble and will be strong and durable and able to withstand the rough usage to which guards are subjected. 'Another object isconvenience in attaching aname or cover plate to give a finished appearance to the structure'.- Other objects and advantages of my invention will appear from the following description.

' In accordance with my invention, I secure the radlatin w1re spokes of such a guard to a centre. attaching late which affords a support for the spo es at two points, the outer support being designed-to clamp a considerable length of the spoke and the inner support being a perforation engaged b the inner 'end of the spoke, which pre erably passes through the per foration and has a substantial length bent back against the face of the plate. An extremely rigid structure is thereby obtained. The outer clamp may conveniently be an integral ear of substantial length perforated near its inner end for the reception of the spoke and bent down upon the spoke.

' The cover plate comprehended within my invention is of the proper size to coverthe attaching plate with the exposed protruding ends of the spokes and has a plurality of flexible fastening ears turn'ed' over the Specification of Letters Patent.

' Patented. Jar 1.73919.

Fig.4 is air-enlarged inner face-view of the attaching plate with portions of the. Y

radiating spokes, as indicated by line 44 of Fig. 2, looking toward the left.-

nection with an electric. fan driven by an ordinary electric motor in the casing 1 which. -1s mounted upon the base 2. The rotary fan is mounted on a hub 3, which is secured-on I have illustrated my invention in conp,

the armature shaft, and the guard is attached'to the casing of the motor.

My improvedguard is preferably -composed of wire and comprises a number of radial spoke members which'are suitably secured at their outer ends and are secured ing plate which provides a two-point bear- .ing for the spokes, one a clamp which em-.

braces and extends along the spoke for some distance, and the other aperforation through which the spoke passes. In' the specific illustrated embodiment of my guard, eight radiating wirespoke members 4 are provided of any usual or suitable shape, the outer ends of which are bent at an angle so that thelcomponent members together at their inner endsby an attach-- together form a cage or protective device of usual shape. The outer ends of the spoke members 4 are secured in any suitable way to a connecting ring 5, which is attached to the motor casing 1 by supporting arms 6.

Also at the front of the guard near its periphery the spokes 4 are coiled around an intermediate stifi'ening ring 7 which also serves to properly space the spokes. T01 this end the intermediate ring 7 is provided with a bend 8 (see Fig. 3) for each spoke, "and the spokes encircle the intermediate ring at these bends 8 and are thereby prevented from traveling around the ring, and are hence kept properly spaced.

At their inner ends the spokes are secured by an attaching plate 9 which provides two points of attachment for each spoke. The outer attachment comprises a perforated, flexible clamping car 10, of which there are eight provided about the periphery of the attaching disk 9 properly spaced for the reception of the spokes, and which initially extend rearwardly at right angles to the plane of the attaching disk 9. Radially inward :from these'ears 10, the disk 9 is provided with a corresponding number of spoke-receiving holes or perforations 11, and the wire spokes are passed through the perforations in the ears 10 and their inner ends are then 4O joining the outer ends 'of the spoke members, and an attachin plate for the inner ends of passed outwardly through the perforations 11 and then bent down along the'front of the attachlng disk 9, as shown in Fig. 2..

The clamping ears are: bent down upon the wire spokes, .4 and are of sufiicient length to extend a substantial distance along the spokes. A two-point bearing is thus provided for the inner end of each spoke memher, and the ears 10, by reasonzof their length, constitute extremely eflicient clamps and lend great rigidity to the structure. The guard is thus made strong and durable, while the simplicity of the attaching means renders the device very easy to assemble.

To provide a finish to the structure as well as to protect the free ends of the wire spokes from accidentalinjury, I provide means for covering up the exposed-ends consisting of a cover plate or disk 12' This cover plate is provided with a plurality of flexible attaching ears 13 extending inwardly about invention.

' thereby guard."

the periphery of the cover plate, and the place. This cover plate may be ornamental, and, if desired, may be used as a name plate, giving an ornamental finish to the It is obvious that various modifications may be made inthe construction shown in the drawings and above particularly described within the principle and scope of my Iclaim': I '1. A guard for electric fans or the like, comprising .radia'l spoke members, means the spoke mem ers having a "double support for each spoke comprising at the outer edge ofthe plate a clamp engaging a sub-' stantial length of the spoke and an inner perforation engaged by the inner end of the spoke. m

2. A guard for electric fans or the like, comprising radial'spoke members, means joining the outer ends of the'spoke members,

- and an attaching plate for the innerends of the spoke members having for each spoke member an outer locking ear of substantial length perforated near its inner end and an inner spoke-receiving perforation, the spokes passing through their respective perforated ears and having their ends secured in therespective spoke-receiving perforations and the ears being turned down upon-the'spokes.

3. A guard'for electric fans or the like,

flexible fastening ears turned over the pecomprising radial wire spoke. member, means joinlng the outer ends of the spoke members, v and an attaching disk for the inner ends of' the spoke members having for each spoke member an outer integral locking ear of substantial length perforated near its inner end and projecting from the periphery of the disk and an inner-spoke-receiving perfo'ra-, tion, the spokes passing through their respective perforated ears and having their endsinserted through the respective spokereceiving perforation and bent back on themselves against the face of the plate and the ears being bent down upon the spokes.

4. A guard forelectric fans or' the like comprising radial spoke members, means joining the outer ends of the spoke members,

' an attaching disk for the inner ends of the spoke members, and a cover platefor the attaching disk having a plurality of flexible fastening ears turned over the periphery of the attaching disk in locking engagement therewith.

5. A guard for electric fans or the like, comprising radial spoke members, means joining the outer ends of the spoke members, an attaching plate for the innerends of the spoke members having a double support for each spoke member comprising a clamp engaging and extending a substantial distance along the spoke member and aspoke-receiving perforation, and a cover plate for the attaching plate having a plurality of riphery of the a'ttaching'plate in looking engagement therewith. a

'6. A guard for electric fans or the like, comprising radial wire .spoke members, means joining the outer ends of the spoke 0 members, an attaching disk for the inner ends of the spoke members having for each spoke member an outer integral locking ear of substantial length perforated near its innor end and projecting from the periphery 1 5 of the disk and .an inner spoke-receiving perforation disposed in substantially radial alinement inwardly from the locking ear, the. spokes passing through their respective perforated ears and having their ends inserted:

, through the respective spoke-receiving perfo-' ration and bent back on themselves against the outer face of the plate and the ears being bent down upon the spokes, and a cover plate for the attaching disk having aplurality of 5 flexible fastenin ears projecting from its inner face and turned over. the periphery of the attaching disk 'in locked engagement therewith.

ture.

CHARLES H. J. DILG.

In witness whereof, I subscribe my signai