IMPROVEMENTS IN APPARATUS FOR ELEVATING AND LOWERING DRAWING AND OTHER BOARDS OR SURFACES, SLATES, AND OTHER SIMILAR ARTICLES, AND FOR SUPPORTING COPIES, DESIGNS, OR OTHER ARTICLES THEREON."
Year: 1880

page_text: LETTERS PATENT to Edwin Hill, of Huntingdon, in the County of Huntingdon,
for an Invention of "IMPROVEMENTS IN APPARATUS FOR ELEVATING AND
LOWERING DRAWING AND OTHER BOARDS OR SURFACES, SLATES, AND OTHER
SIMILAR ARTICLES, AND FOR SUPPORTING COPIES, DESIGNS, OR OTHER
ARTICLES THEREON."
i
PROVISIONAL SPECIFICATION left by the said Edwin Hill at the Office of
the Commissioners of Patents on the 8th November 1880.
EDWIN HILL, of Huntingdon, in the County of Huntingdon. "IMPROVEMENTS
IN APPARATUS FOR ELEVATING AND LOWERING DRAWING AND OTHER BOARDS OR
SURFACES, SLATES, AND OTHER SIMILAR ARTICLES, AND FOR SUPPORTING COPIES,
DESIGNS, OR OTHER ARTICLES THEREON.'
"
This Invention relates particularly to the arrangement and combination of
apparatus for elevating and lowering to various angles drawing and other boards,
slates, and other similar articles or surfaces, and for supporting copies, designs, and
other articles thereon, such apparatus being adjustable and removable. The
apparatus is applied or attached to the drawing board, slate, or other article in a
compact manner for carrying or packing when out of use.
This improved apparatus can be readily attached or applied to ordinary drawing
boards or slates, such as are now used in architects and other offices, schools of
science and art classes, lecture rooms, and elsewhere.
The above combined apparatus consists of a longitudinal horizontal bar or rod
with bevel or rough edge, and capable of elevating and lowering parallel with the
board, slate, or other surface, to which it is applied with pivots or rivets, and having
screw holes where necessary with slot or round hole as required.
Adjustable, semi-rotating, or radiating connecting supporting bars, rods, or legs
of suitable number (according to the size of the board, slate, or other article) are
arranged and applied, having regulating pins or catches fixed in suitable positions
and formed with rivet, screw, or pivot holes, as may be required.

page_text: Radiating, semi-rotating, adjustable arms or stays furnished with screws, slot, or
rivet holes are applied in suitable positions, as required.
Plates or nuts with screw or rivet holes are arranged with regulating channels or
recesses so as to be fixed flush with the thickness of the board, slate, or other
surface with screw or key, as may be required.
Removable eye or thumb bolts are employed to attach the elevating apparatus to
the board, slate, article, or other surface, a handle or cord being applied for carrying
the same.
The apparatus above described can be made and arranged to suit the size of the
board, slate, or other article to which it is applied, and if plates or nuts are
applied to the ends and side the apparatus can be removed and fixed to either end
or side by taking out the bolts and transferring the one to the other, thereby
making the apparatus removable without injury to the board, slate, or other
article.
The whole apparatus when out of use will be arranged flush with the thickness
of the board, slate, or other article, and be parallel longitudinally with its length.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edwin Hill in the Great Seal Patent Office on the 7th May 1881.
EDWIN HILL, of Huntingdon, in the County of Huntingdon. "IMPROVEMENTS
IN APPARATUS FOR ELEVATING AND LOWERING DRAWING AND OTHER BOARDS OR
SURFACES, SLATES, AND OTHER SIMILAR ARTICLES, AND FOR SUPPORTING COPIES,
DESIGNS, OR OTHER ARTICLES THEREON."
This Invention relates to the arrangement and combination of apparatus for
elevating and lowering to various angles or inclines drawing and other boards,
slates, and other similar articles or surfaces, and for supporting copies, designs, and
other articles thereon, such apparatus being adjustable and removable.
This improved apparatus can be readily applied or attached to a drawing board,
slate, or other similar article in a compact and convenient manner for carrying or
packing away when out of use, and it can also be readily-attached or applied to
ordinary drawing boards or slates, such as aro now used in architects and other
offices and schools, science and art classes, lecture rooms, and elsewhere.
And in order that my Invention may be clearly understood and readily carried
into practice I will proceed to describe the Drawings hereunto annexed, which
show several views of apparatus arranged and constructed in accordance with my
Invention.
Figure 1 shows the apparatus applied to a drawing board when fixed so as to
support it in an inclined position with copy rest open ready for use; Figure 2
shows the apparatus folded up in a compact form on the edge of the board for
carrying or stowing away, and Figure 3 shews an elevation of the apparatus open,
but without the supports for holding a copy. The other Figures show separate
views of the parts detached on a larger scale, corresponding parts being marked
with similar letters of reference in all the Figures.
a is a longitudinal horizontal bar or rod arranged so as to be parallel, when in
use, with the board, slate, or other surface A. Each end of the bar or rod a is
connected by pin joints a to the adjustable supporting bars, rods, or legs b, of
which there may be two or more according to the size of the board, slate, or other
articles to which the apparatus is applied. The other ends of the supporting bars
or rods b are connected to the plate & which are let into and fixed by screws flush
with the thickness of the board A, the supporting bars b being fixed in the desired
position by thumb screws e which enter female or screw sockets d' formed in
the plates d. Angular or other shaped recesses d are formed on each of the
plates d, into one or other of which a projection 6¹ on each of the plates benter,
and thus securely hold the parts in position when scrowed together by the screws c.
The plates a and b may be formed with slots a* and bx to afford facility in
adjusting of the parts.
c, c, are arms which are also fixed in position by the screws e, and are employed
in combination with the supports a and b when required for holding a design;
manuscript, or other article which it is desired to copy.
Springs or clips c³ are formed on or applied to the arms c for holding the design
or manuscript in position.
Plates d, in duplicate, are fixed upon the edge both of the side and end of a
board or slate A in order that the apparatus previously described may be applied
either at the end or sido as may be required..
A is a handle by which the board or slate can be carried.
By partly unscrewing the screws e the apparatus can be folded together with the
several bars overlaying one another, corresponding with the thickness of the board
or slate A in a compact manner so. as to admit of a number of boards or slates
being packed or placed one upon another, as is usually done.

page_text: I would remark that I do not claim any of the parts separately which are well
known and in common use, at the same time it is evident that the apparatus
herein before described may be considerably varied and modified in construction
without departing from the novel character of what I claim as my Invention,
which consists in arranging adjustable apparatus for tilting a board, slate, or other
similar article to a suitable angle when in use, such apparatus being removable and
capable of being folded or packed up on the edge or thickness of the board, slate,
or other article when out of use, substantially in the manner and for the purposes
herein before described and represented in the Drawings hereto annexed.
In witness whereof, I, the said Edwin Hill, have hereunto set my hand and
seal, this Sixth day of May, in the year of our Lord One thousand eight
hundred and eighty one.