US1956094A

US1956094A - Derrick

Info

Publication number: US1956094A
Application number: US644706A
Authority: US
Inventors: Joseph E Gadbois
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-28
Filing date: 1932-11-28
Publication date: 1934-04-24
Anticipated expiration: 1951-04-24

Description

J. E. GADBOIS DERRICK Filed Nov. 28. -1932 April 24, 1934.

2 Sheets-Sheet l w n E ELL- 1.777 :z -ELL...

BY M@ ATTORNEY.

April 24,1934.

J. E. GADBOIS DERRICK Filed Nov. 28, 1932 2 Sheets-Sheet 2 ATTORNEY.

patented pr. 24, 1.934

UNITED STATES PATENTv OFFICE 12 Claims.

r)This invention relates to improvements in hoisting apparatus and is directed more particularly to improvements in derricks.

The principal objects of the invention are directed to a derrick structure including novel means for rotating the derrick., other means for extending the boom and means for transporting or moving thederrick as from one lloor to the next.

The objects of the invention are accomplished by the provision of a novel combination and arrangement of parts to be more fully hereinafter referred to in connection with the accompanying description of the present preferred form thereof taken in connection with the accompanying drawings, wherein;

Fig. 1 is an elevational view of a derrick structure embodying the novel features of the invention.

Fig. 2 is a sectional View on the line 2 2 of Fig. 1.

Fig. 3 is a sectional plan view on the line 3 3 of Fig. 1.

Fig. 4 is a sectional plan view on the line 4 4 of Fig. 1. Fig. 5 is a sectional plan view on the line 5 5 of Fig. 1.

Fig. 6 is a sectional View on the line 6 6 of Fig. 5.

Fig. 7 is a partial inverted plan view of the support shown in Fig. 4.

Fig. 8 is a small scale diagrammatic view to show certain features of the invention, and

Fig. 9 is a side elevational view of the base and support of the derrick.

Referring now to the drawings more in detail the invention will be fully described.

In Fig. 1 there is shown a mast 2 having a boom 4 pivoted thereto at `6. The mast 2 rests on and rotates relative to a base 8 which also is located over a support 10.

Vertical beams 14 and horizontal beams 16 which represent parts of a building and a cross member 18 is shown as being supported by the horizontal members 16. These are shown to as.-

` sist in a disclosure of certain features of the invention.

The boom 4 may consist of a tubular member lmade from fabricated material and has slidable therein an extension 7. A pulley block 9 at the outer end of the boom receives a cable represented by dotted lines l1 which cable may pass downwardly through the mast and be wound up on a winch whereby the boom may be swung on its pivotal connection with the mast. The mast its other end may pass through the boom and mast to the winch or other operating mechanism. The extension 7 may take any desired form such as a hollow tube-like member so as to be light but strong and rigid for sliding in the boom.

A screw rod 17 is in engagement with a part of the extension 7 such as an end wall 19 thereof, (see Fig. 2). A crank 21 at one side of the 'boom 4 and a gear 23 are xed to a shaft 25 which is journalled in the boom. The gear 23 meshes with another gear 27 fixed to the screw rod 17. By rotating the crank 21 the screw rod is rotated so as to move the extension back and forth relative to the boom and in this way move the outer end thereof so that the boom structure may be varied in length as is desirable in connection with the operation of the derrick.

The base 8 includes an upper plate 22 on which* the lower end of the mastkis seated for rotative movements and is hollowed out as shown in Fig. 6. A shaft 24 is journalled in a suitable bearingr26 of the base and has a gear 28 on its inner end which meshes with a gear 30. The gear 30 is internally screw threaded to receive a screw rod 32 and a crank 34 on the outer end of the shaft 24 is provided for turning the shaft 24 and gear 28 to rotate the gear 30 and thereby move the rod 32 up and down.

A ratchet wheel 35 is carried by the shaft 24 and a pawl 37 is pivoted at 39 to the base. As shown in Fig. 5 the pawl 35 is disengaged from the ratchet wheel but it may be swung into engagement therewith tol prevent rotation of the shaft in one direction.

The Support 10 as shown in Figs. 4 and 7 has a shaft 40 journalled therein and a gear 42 on the inner end of the shaft is disposed in an opening 46 extending through the support. The gear 42 is in mesh with a mating gear 48 to which the threaded rod 32 his xed and the lower end 33 of the rod 32 is journalled in a bracket 50 in the opening of the support. Ratchet wheels 52 and 54 are carried by the shaft 40 and pawls 56 and 58 are pivoted to the support for swinging movements so as to engage the ratchet wheels. By engaging the pawls with the ratchets the shaft 40 may be held against rotation in one way or the other. By engaging both o f them the shaft 40 may be held against rotation in either direction.

A crank 60 is carried on the outer end of shaft 40 to facilitate rotation of the shaft and a pulley 62 is secured thereto which may be belted to a driving means such as a motor, engine or the like.

The operation of the mechanism just described will be explained in connection with Figs. 1 and 8. As shown in Fig. 1 the support unit i0 rests on a cross member 18 which in turn is supported by horizontal beams 16. It will be assumed that the beams 16 represent the beams of one licor of a building and that it is desired to transport the derrick from said floor to a floor above where the derrick is to be used in connection with work on the said floors.

To accomplish this the shaft 24 of the base is held against rotation by means of the ratchet and

pawls

35 and 37 which holds the gear 30, in

which the rod 32 is screw threaded, against rota-V tion. The shaft 40 in support 10 is rotated by means of the crank 60 or by power means for driving the pulley so as to rotate gear 42 and gear 48 and thereby rotate the threaded rod 32. In this way the rod 32 is screwed into gear 30 so that base 8 is elevated to a point above the horizontal beams 70 representing part of an upper floor level.

When in this elevated position blocking of some sort such as represented by 72 and 74 is placed on beams 70 to underlie and support the base 8. The shaft 24 of the base is then rotated to rotate gear 30 for screwing the rod 32 through the gear 30 thus drawing support 10 upwardly so that it underlies the base 8. Guides 76 on the support are receivable in openings 77 of the base 8 so as to position the base and support properly relative to one another. When the support has been raised to underlie the base, suitable supporting members may be placed beneath the support 10 and on top of beams 70 to support the support 10 and base thereabove after which the blocking 72 and 74 may be removed. In this way the derrick may be moved from a lower floor to a iioor thereabove and the derrick may be positioned for use in connection with the iioor to which it is moved. The guides 'i6 are preferably threaded for receiving nuts 20 that the base and support may be clamped together. Clamp straps '79 are provided which have clamp screws 80 at the lower ends thereof so that the support 10 may be secured to a beam 18 or the like.

Novel means for rotating the mast is provided (see Figs. l and 3), and consists of the following:

A circular member 90 is supported by uprights 92 on the base 10 which is slotted as at 94. A clamping member 96 passes through the slot 94 and has a head 98 on its inner side. A washer 100 is loosely disposed on the member 96 and a clamping member 102 is screw threaded on the member 96. A shaft 104 is journalled in the member 96 and carries a gear 106 on its inner end and an operating wheel 108 on its outer end. A gear 110 is associated with the mast which meshes with gear 106. By rotating the wheel 108 and shaft 104 the mast is rotated on its axis.

By loosening the clamping means consisting of the parts 96, 98 and 102 the shaft together with gear 106 and wheel 108 may be moved about the axis of the mast, the part 96 being slidable in the slot 94. In this way the operating means for rotating the mast may be moved to various positions and then the mast may be rotated from the adjusted position of the shaft.

A second circular member 112 similar to the member 92 may be associated with the supports 92 and the shaft 104 or a part associated with the gear 106 may be slidable in a slot in said member 112. This will act as an inner journal for the shaft and gear and tend to steady the same for its rotative movements.

From the foregoing it will be seen that the boom may be extended by means of the relatively slidable boom extension and that the same is operable by movements of the crank. It will be noted that the means for rotating the boom may be moved to various positions about the axis of the derrick to various positions of adjustment.

As a further feature it will be noticed that it is possible to move the entire structure from one floor to another thus overcoming the difficulties and eliminating the expense now necessary in dismantling a derrick structure for the purpose of so moving it.

Various changes may be made in the form of the invention without departing from the spirit and scope thereof, and therefore it is preferred to be limited, if at all, by the appended claims rather than by the foregoing description.

What is claimed is:

1. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a screw rod associated with said base and support, means asso-V away from said support by rotation of the rod,A and means associated with said threaded member for rotating the saine to move the support relative to the base.

2. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a rotatable screw rod associated with said base and support, a shaft associated with said support, driving connections between said shaft and rod, a shaft associated with said base, a rotatable internally threaded member receiving said rod operably connected to said last named shaft, means for rotating said shafts and means for holding the same against rotation.

3. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a rotatable screw rod associated with said base and support, a shaft associated with said support, driving connections between said shaft and rod, a shaft associated with said base, a rotatable internally threaded member receiving said rod operably connected to said last named shaft, means for rotating saidl shafts, means for holding the same against rotation and guides on said support receivable in guideways provided in said base.

4. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a rotatable screw rod extending upwardly from said support through said base and into said mast, means associated with said support for rotating said screw, means for holding the same against rotation, a gear rotatable in said base in threaded engagement with said rod, means associated with said base for rotating said gear, means for holding said means against rotation, all adapted and arranged whereby the base and mast may be moved upwardly from said support and the base supported at a distance above said support and the support may move upwardly towards said base.

5. A derricl; comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a rotatable screw rod extending upwardly from said support through said base and into said mast, means associated with said support for rotating said screw, means for holding the same against rotation, a gear rotatable in said base in threaded engagement with said rod, rotatable means associated with said base for rotating said gear, means for holding said rotatable means against rotation, all adapted and arranged whereby the base and mast may be moved upwardly from said support, and the base supported at a distance above said support and the support may move upwardly towards said base and means associated with said base and support for guiding them as they are moved into engagement with one another.

6. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a screw rod rotatable in said support extending through said base and into said mast, an operating shaft in said support, driving connections between said shaft and said screw whereby the screw is rotated by the shaft, a gear rotatable in said base in screw threaded engagement with said screw, an operating shaft associated with said base having a gear in engagement with said first-named gear, and means associated with said operating shaft and base adapted and arranged to hold the same against rotation or to permit rotative movements thereof.

7. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a screw rotatable 1n said support extending through said base and into said mast, an operating shaft in said support, driving connections between said shaft and said screw whereby the screw is rotated by means of the shaft, a gear rotatable in said base in screw threaded engagement with said screw, an operating shaft associated with said base having a gear in engagement with said first-named gear and means associated with said operating shaft and base adapted and arranged to hold the same against rotation or to permit rotative movements thereof, and releasa-ble means associated with the operating shaft of the support to hold the same against rotative movements.

8. A derrick comprising in combination, a base and a mast rotatable thereon, a support below and separate from said base, a screw rod rotatably mounted in said support extending through said base and into said mast, an operating shaft rotatable in said support, interengaging gears associated with said shaft and screw rod. means associated with said support and shaft to hold the said shaft against rotation in either direction or to permit free rotative movements thereof, a gear in said base in threaded engagement with said screw rod, an operating shaft rotatable in said base, a gear thereon in engagement with said gear and engageable means associated with said operating shaft and base to hold said shaft against rotation or permit rotative movements thereof.

9. A derrick comprising in combination, a base having a mast rotatable thereon, a support below and separate from said base, a screw rod rotatably mounted in said support extending through said base and upwardly into said mast, an operating shaft rotatable in said support, operative connections between said shaft and rod, an operating shaft rotatable in said base, a drive gear thereon, and a driven gear in engagement with said drive gear in screw threaded engagement with said screw rod, all adapted and arranged whereby the operating shaft of the support and the operating shaft of the base may be operated to effect movements of the base upwardly from the support and of the support upwardly towards said base.

10. A derriclr comprising in combination, abase having a mast rotatable thereon, a support below and separate from said base, a screw rod rotatably mounted in said support extending through said base and upwardly into said mast, an operating shaft rotatable in said support, operative connections between said shaft and rod, an operating shaft rotatable in said base, a drive gear thereon, a driven gear in engagement with said drive gear in screw threaded engagement with said screw rod, and guiding means associated with said base and support whereby they are guided for relative movements, all adapted and arranged whereby the operating shaft of the support and the operating shaft of the base may be operated to effect movements of the base upwardly from the support and of the support upwardly towards said base.

1l. A derrick comprising in combination, a base having a mast rotatable therein, a support below and separate from the base, a screw rod rotatable in the support extending upwardly through the base into the mast, an operating shaft rotatable in the support, gear connections between said shaft and screw rod whereby the latter is rotated by the former, an operating shaft rotatable in the base, a drive gear thereon, a driven gear meshing therewith in screw threaded engagement with said screw rod, means associated with said base and operating shaft thereof to hold said shaft against rotation, and means associated with said support and operating shaft thereof to hold said shaft against rotation, all adapted and arranged whereby the operating shaft of the support may be rotated to rotate the screw rod so that it is unscrewed from the driven gear of the base which may be held against rotation to effect a raising movement of the base from the support and whereby the operating shaft of the support may be held against rotation and the operating shaft of the base rotated to rotate the driven gear and screw the rod thereinto and effect a movement of the support towards said base.

l2. A derrick comprising in combination, a base having a mast rotatable therein, a support below and separate from the base, a screw rod rotatable in the support extending upwardly through the base into the mast, an operating shaft rotatable in the support, gear connections between said shaft and screw rod whereby the latter is rotated by the former, an operating shaft rotatable in the base, a drive gear thereon, a driven gear meshing therewith in screw threaded engagement with said screw rod, means associated with said base and operating shaft thereof to hold said shaft against rotation, means associated with said support and operating shaft thereof to hold said shaft against rotation, and guiding means associated with said base and support, all adapted and arranged whereby the operating shaft of the support may be rotated to rotate the screw rod so that it is unscrewed from the driven gear of the base which may be held against rotation to effect a raising movement of the base from the support and whereby the operating shaft of the support may be held against rotation and the operating shaft of the base rotated to rotate the driven gear and screw the rod thereinto and effect a movement of the support towards said base.

JOSEPH E. GADBOIS.

lli@