US1750600A - Door for silos - Google Patents

Description

March 11, 1930. L. D. HOUGHTALING 1,750,600 noon FOR SILOS Filed Jan-.14, 15329 2 Shoals-Sheet. l

- INVENTOR WITNESSES L. Djbu htahqy,

ATTORNEY March 1930. L. D. HOUGHTALING 0,

DOOR FOR S ILOS Filed Jan. 14, 1929 2 Sheets-Sheet 2 INVENTIORV I .L.D.H(Zl9btali77 ATTORNEY WITNESSES Patented Mar. 11, 133i) LEVI D. HQUG-HTALZTNG, F READING, PENNSYLVANIA noon roa sites Application filed January 14, 1929.

This invention relates to doors of silos.

An object of the invention is the provision of a door which may be readily removed from the silo to provide an opening to discharge 5 materials stored in the silo, means being provided for readily releasing a securing means for the door, said means providing rungs whereby the operator may climb to the upper portions of the silo.

A further object of the invention is the pro vision of a fastening means for silo doors in which a body member has inturned spring legs from which laterally project arms received within the bearings of brackets secured 16 to the outer face of the door. Feet, being connected to the free ends of the arms, engage the walls of the silo for maintaining the door in position, the brackets having cams engaged by the spring arms for forcing said arms on the feet inwardly, thereby locating the feet within the confines of the door and out of engagement with the walls of the silo, thus permitting removal of the door.

This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawings forming a part of the specification; nevertheless it is to be understood that the in vention is not confined to the disclosure, be-

ing susceptible of such changes and modifi cations which shall define no material departure from the salient features of the invention as expressed in the appended claim.

Figure l is a view in perspective of a silo constructed in accordance with the principles of my invention.

Figure 2 is a fragmentary view in perspec tive of my improved securing means.

Figure 3 is a vertical section taken along the line 33 of Figure 4.

Figure 4 is a fragmentary view in elevation showing a door equipped with my fastening means.

Figure 5 is a horizontal section taken along the line 55 of Figure 4.

Figure 6 is a vertical section taken along the line 66 of Figure 4.

Referring more particularly to the drawings, 10 designates a base member formed of "concrete or any suitable material from which Serial No. 332,533.

rises an approximately cylindrical silo 11 formed of any suitable material. This silo is covered by a roof formed of two sections 12 and 13. Section 12 is dome-shaped, while section 13 is frusto-conically shaped with the outer walls inclined at a slight angle to the vertical.

A pair of jambs 14 are secured to the outer walls of the silo. Steel bands16 encircle the walls of the silo at spaced points and have their ends received within sockets 17 formed integrally with fastening blocks 18 which are secured in any appropriate manner to the jambs 14. Nuts 19 are threaded onto the ends of the steel bands for drawing the bands toward each other and for maintaining the same in position. Rods 20 and 21 are formed integrally with the spaced blocks 18 and the ends of the rod 20 is threaded at 24 onto one end of a passage within a sleeve 22. The free end of rod 21 is threaded into the other end of said sleeve as shown at 23. The sleeve 22 is in the shape of a nut which may be rotated in any suitable manner for drawing the ends of the rods together for relieving strain on the jambs 14 due to the pull exerted by the bands 16.

A left hand bracket 30 is secured adjacent the left hand edge of a door 31, while a right hand bracket 32 is secured to the outer face of the door adjacent the right hand edge. The combination of elements included in each bracket are similarly constructed with the exception that the elements are oppositely placed. Bracket 30 is provided with an enlargement 33 having a cam edge 34 and a bearing 35. Bracket 32 has a thickened portion at 36 and is provided with a cam edge 37 and a bearing 38.

A fastening member in the form of a bale 39 has a body portion 40 spaced from the outer face of the door 31 and inwardly extending legs 41 and 42. The legs are connected to the body member by means of a spiral spring 43. An arm 44 extends laterally from the leg 41 and is received within the bearing 35, while an arm 45 extends laterally from the leg 42 and is received Within the bearing 38. A foot 50 is formed integrally with the arm 44 and extends down wardly and is provided with a friction pad 51 adapted to engage the outer surface of one of the jambs 14. The arm 45 is provided with a foot 52 having a friction pad secured to its inner surface in the same manner as is disclosed in Figure 2 for the foot 50.

The operation of my device is as follows: A number of the doors 31 are located at spaced intervals along the height of the elongated opening 15 to permit the discharge of grain at progressively varying heights.- lVhen the arrangement of the door provides for a uniform spacing of the members 39, such mem bers may be employed as rungs of a ladder whereby a workman may climb to the top of the silo. Itwill thus be seen that the member 39 not only provides a fastening means for various doors, but provides means of ascending or descending the silo.

hen it is desired to remove a door, it is only necessary to rockthe member 39 upwardly in its bearings 35 and 38 whereby the leg 41 and 42 will engage respectively the cam surfaces 34 and 37 and cause the inner portions of the legs to be moved inwardly towards each other. hen this action occurs, the arms 44 and 45 will be moved inwardly, withdrawing the feet 50 and 52 out of engagement with the jambs 14 whereby the door may be moved inwardly to permit the discharge of grain and to permit the workman to enter the silo at this point.

The body member 40, the legs 41 and 42, and the arms 44 and 45 are formed of resilient material. The legs 41 and 42 will not only be moved inwardly towards each other, but will spring outwardly when the body portion 40 of the bale 39 is moved to an inoperative position as shown in Figure 4.

The rocking of the bale 39 to an upper unlocking position will cause the feet 50 and 52 to be rocked and the greater portion of the contacting surface removed from frictional engagement with the jamb 14 thereby permitting ready release of the feet.

It will be noted that the jambs 14 have undercut portions as shown at to be engaged by bevels 61 of the door 31 so that when the lock is in position, the bevelled portion 61 will snugly fit the under-cut portion 60. A rib 62 is formed along the upper edges of the door and adapted to be received Within the complementarily formed grooves in the bevelled sections 60 of the jambs 14.

I claim: 7

A device of the character described comprising a door, spaced brackets secured to the door and provided with cams, a bail having a body portion spaced from the door, legs formed, of resilient material and extending inwardly from the body portion and engaged bythe cams for moving the inner ends of the legs towards each other when the bail is a foot projecting laterally from each arm and provided with a friction pad adapted to engage a fixed support beyond the ends of the door for holding the door to the fixed suprocked, an arm projecting laterally from each leg and guided for reciprocation by a bracket,

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