Novel or Improved Appliances or Grip-blocks for Use with Girders and Props in Collieries and like places.
Year: 1897

page_text: Novel or Improved Appliances or Grip-blocks for Use with Girders
and Props in Collieries and like places.
We, JAMES COPE CADMAN, Silverdale House, Silverdale, Manager of Coal and
Iron Works, and JOHN THOMAS MINSHALL, Albert Terrace, Silverdale, Staffordshire,
Engineer, do hereby declare the nature of this invention to be as follows:-
This our invention has reference to novel or improved adjustable and removable
appliances or grip-blocks for use with girders and props in collieries, mines and the
like places, the object of our said invention being to secure the girder or girders
placed on the upper ends of such props in required position.
In carrying our said invention into practice we make such appliances or grip-
blocks of various sizes of or from malleable iron or steel by casting, stamping or
forging, each of such appliances having a grooved or ledged portion of suitable size
at each of their sides so that the said appliances may be readily slid on to the flange
or flanges on the lower side of the wrought-iron or steel girder whose ends rest on
the metallic or wood props used, a tapering wrought-iron or like suitable metallic
key or wedge placed in or through a hole or slot formed through the lower part of
such appliances beneath the said lower flange of the girder used so as to bind
against the underside of such girder to retain such girder in position.
In a modification of the above we make such appliances or grip-blocks in two
parts by casting, stamping or forging so that each half or part of such appliances
may be placed on the lower flanges of a metallic girder after such girder has been
placed in position on props, a tapering metallic key or wedge such as before
described placed in or through a hole or slot formed through the two parts of such
divided appliances below the girder binding against the underside of such girder
and securely fastening such divided appliances in position on such girder, a wrought-
iron or like suitable metallic pin, bolt, ring or the like placed in or through a hole
formed in the projecting smaller end of such tapering keys retaining such keys in
place.
It will be readily understood that such metallic appliances or stops when made
solid or in one piece are slid or placed on the lower flange or flanges of the girder
to be used before props are placed beneath the ends of such girders; but such
appliances when made in halves or two parts can be readily placed on or keyed to
such girders, or detached therefrom after such props and girders have been erected,
and slid along the flanges of such girders, and secured against such props by means
of the aforesaid tapering keys.

page_text: Novel or Improved Appliances or Grip-blocks for Use with Girders
and Props in Collieries and like places.
We, JAMES COPE CADMAN, Silverdale House, Silverdale, Manager of Coal and Iron
Works, and JOHN THOMAS MINSHALL, Albert Terrace, Silverdale, Staffordshire,
Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention has reference to novel or improved and removable appliances or
grip-blocks for use in connection with iron or steel girders and props in collieries,
mines and like places, the object of our said invention being to secure a girder or
girders in required position on or at the upper end of such props.
In carrying our said invention into practice we make such appliances or
grip-blocks in one piece of various or different required sizes of or from malleable
iron or steel by stamping, casting or forging, each of such appliances having a
grooved or ledged portion of suitable size at each of their sides so that such
appliances may be readily slid on to the lower flange or flanges of a metallic girder
before placing the ends of such girders on the upper ends of the metallic or wood
props used, a tapering wrought-iron or like suitable metallic bolt, key or wedge
placed in or through a hole or slot formed through such appliances beneath the said
lower flange of a girder used having one of its ends throaded so that when a nut or
the like on such threaded end is screwed up on such bolt the bottom flange of such
girder will be gripped by such appliances.
In a modification of the above we make such appliances or grip-blocks of various
or different sizes in two parts or halves by casting, forging or stamping of or from
iron or steel for enabling such appliances or grip-blocks to be fitted or attached to
the lower flange of girders after such girders have been erected and fixed in position,
a wrought-iron or steel bolt being placed or fitted through a hole or slot formed
through the two parts of such grip-blocks beneath the lower flange of their girder
to connect such parts together. A. suitably shaped nut on the threaded end of such
bolt when screwed up causing the two parts of such blocks to be firmly gripped
against the lower flange of the girder to which they may be fitted.
In order that our said invention may be more readily understood and explained in
detail we have hereunto annexed a sheet of drawings on which letters of reference
are marked.
DESCRIPTION OF DRAWINGS.
Figure 1 represents a side elevation of a metallic grip-block made in one piece
according to our invention.
Figure 2 is an end elevation of Figure 1 showing how such block is slid on to the
lower flange of a metallic girder.
Figure 3 is a plan view of Figure 2.
Figure 4 is an inverted plan view of Figure 2.
Figure 5 is a sectional elevation of the grip-block shewn at Figures 1, 2, 3 and 4
taken on the line A-A of Figure 2 looking in the direction indicated by the

page_text: Figure 10 is a side elevation of one of the parts of the grip-block shewn at
Figures 6, 7, 8 and 9 taken on the line C-C of Figure 7 looking in the direction
indicated by arrow D.
Figure 11 represents a section of a road or working in a colliery or mine
showing a wrought-iron or steel girder supported by wrought-iron or steel props d²
and the position of grip-blocks ou the lower flange of such girder for preventing
the upper end of such props falling inwards, and Figure 12 is an enlarged view of
a metallic grip-block attached or fixed in position to the lower flange d³ of a
metallic girder for preventing the upper end of the metallic prop d' falling
inwards.
On reference to the drawings hereto annexed a represents the side elevation of
a metallic grip-block made solid or in one piece, and b, c represent the two parts
of a divided grip-block.
When a solid grip-block a is slid on or fitted to the lower flange ³ of a metallic
girder before such girder is placed in position the underside of the projecting
portions ẞ of such blocks rest on the upper surface of the lower flange of such
girder, and after a metallic wedge-shaped bolt is fitted or placed in the hole f and
screwed up or tightened by means of a nut on its threaded end the upper surface
of such bolt forces or draws such portions ẞ down on to the upper surface of the
flange of such girder so as to tightly grip same.
The two parts b, c of a divided metallic grip-block when placed on or fitted to
the lower flange d³ of a girder after being fixed in position are tightly fastened or
gripped thereto by means of a metallic bolt g passing through the hole h and
screwed or tightened up by means of a nut g2 on its threaded end, when such nuts
are slackened or partially unscrewed such grip-blocks whether solid or in two
parts are slidable on the lower flange of the girder to which they are fitted.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1st. The construction of wrought-iron, cast-iron or steel grip-blocks or appliances
of different or various sizes in one piece or solid in the shape shown for attaching
or fixing to the lower flange of metallic girders for retaining in required position
the props used in connection therewith in the roadways or workings of collieries,
mines and like places as herein substantially described set forth and illustrated on
the drawings hereto annexed.
2nd. The construction of wrought-iron, cast-iron or steel grip-blocks or
appliances of different or various sizes in two parts or halves for attaching or
fixing to the lower flange of metallic girders for retaining in required position
the props used in connection with such girders in the roadways or workings of
collieries, mines and like places as herein substantially described set forth and
illustrated on the drawings hereto annexed.
Dated this th
T. 1000
JOHN NEWTON,
Longport, Stoke-on-Trent, Staffs., Agent for Applicants.