Timber Structures for Mines.
Year: 1887

page_text: Date of Application, 7th Mar., 1887.
Complete Left, 13th June, 1887.
Complete Accepted, 15th July, 1887.
Timber Structures for Mines.
I, GEORGE JARVIS GOODHUE, residing corner of Division and Barnard Streets, in
the city of Stevens Point, county of Portage, and State of Wisconsin, United States
of America, Examiner of Mines, do hereby declare the nature of this invention to be
as follows:
The invention relates to timber structures for mines. In the ordinary method of
mining, a shaft is first sunk and at various depths suitable drifts are started therefrom.
A drift is first chambered out to form a space ordinarily about eight feet square, more or
less, and upon the floor of said drift are set timbers and at cach corner of the chamber
a leg is set upon these timbers. The chambering out is continued through the drift
and from each side thereof, timbers and legs being added from time to time as the
work proceeds. The tops of the legs are connected by caps and the work carried in
an upward direction additional legs and caps being added as the excavation proceeds
in order to shore up the mine. The legs are provided with gudgeons.
In my invention I make the caps of round timber, in order to gain additional
strength, and the respective ends of each cap are suitably cut away to form top and
bottom arc-shaped shoulders, thereby leaving tongues, that are also cut away to form
recesses, and the sides of these tongues are beveled off at about an angle of
forty-five degrees. The recesses may be either concave or square, according to the
form of the gudgeons on the legs. When the caps are set on the legs, the tongues of
the former rest upon the tops of the latter, their arc-shaped shoulders bearing against
the outer sides of said legs and their beveled faces forming miter-joints. The ends
of the tongues are recessed as stated, to fit around the gudgeons.
When the several caps are in position, the arc-shaped shoulders form a circular seat
just above and in line with each leg, on which the tongues rest, thus providing a
secure bearing for the next succeeding leg, and the spaces formed by the recessed
ends of said tongues form sockets to receive the lower gudgeon on the latter leg.

page_text: Like the caps, I prefer to make the legs of round timber and in case such timber be
of varying diameter, I cut away the ends of the larger legs to form circular shoulders,
in order to permit a close fit of the tongues on said caps.
The chief advantages of my construction are as follows: the shoulders of the caps
bearing against the body of the legs, the strain is on said body-portion and not on the
gudgeons, as is the case in the structures now generally is use, and hence there is no
breaking of my gudgeons and consequent dislocation of legs and caps.
Again, the ends of the caps being all uniform, there is no trouble in fitting the
same to the legs, and the adjacent ends of the several caps being miter-joined when in
position, the pressure that may be exerted in one direction is met with a resistance in
all other directions.
ALLISON BROS.,
Agents for the Applicant.

page_text: I, GEORGE JARVIS GOODHUE, residing at corner of Division and Barnard Streets,
in the City of Stevens Point, county of Portage, and State of Wisconsin, United
States of America, Examiner of Mines, 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:-
My invention relates to timber structures for mines; and it consists in certain
peculiarities of construction and combination of parts, as will be hereinafter described
with reference to the accompanying drawings, in which
Figure 1 represents a side elevation of a structure embodying my invention; Fig. 2,
a plan view of the same; Fig. 3, a detail view of a leg; Figs. 4, 5, and 6, detail views
of a cap and Fig. 7, a detail of another form of leg employed in my structure.
In the ordinary mode of mining, a shaft is first sunk, and at various depths suitable
drifts are started therefrom. A drift is first chambered out to form a space, ordinarily
about eight feet square, (more or less,) as may be found necessary or desirable, and
upon the floor of said drift are set timbers A, and at each corner of the chamber a
leg, B, is set upon these timbers. The chambering out is continued through the drift
and from each side thereof, timbers and legs being added from time to time as the
work proceeds. The tops of the legs are connected by caps C, and the work carried
on in an upward direction, additional legs and caps being added as the excavation
proceeds, in order to shore up the mine.
The legs B are provided with gudgeons a, and these latter are perferably round,
though in some instances the same may be square.
In my invention I prefer to make the caps C of round timber, in order to gain
additional strength, and the respective ends of each cap are suitably cut away to
form top and bottom arc-shaped shoulders bb, thereby leaving tongues c, that are
also cut away to form recesses d, and the sides of these tongues are beveled off at
about an angle of forty-five degrees, as shown at e. The recesses d may be either
concave or square, according to the form of the gudgeons a on the legs B; and, if
desirable, said recesses and gudgeons may be entirely omitted, though it is preferred
to employ the latter as a guide to the fitting of the caps.
When the caps C are set on the legs B, the tongues c of the former rest upon the
tops of the latter, their are shaped shoulders 6 bearing against the outer sides of said
legs and their beveled faces forming mitre-joints, as bestțillustrated in Fig. 2. In
case the legs are provided with gudgeons the ends of the tongues c are recessed to fit
around the same, as described.
When the several caps are in position, the arc-shaped shoulders 6 form a circular
seat just above and in line with each leg, on which the tongues crest, thus
providing a secure bearing for the next succeeding leg, and the spaces formed by
the recessed ends of said tongues form sockets to receive the lower gudgeon on the
latter leg.

page_text: Like the caps, I prefer to make the legs of round timber, and in case such
timber varies in diameter I cut away the ends of the larger legs to form circular
shoulders, as shown by. Fig. 7, in order to permit a close fit of the tongues on
said caps, these tongues being of uniform size and both parts B C shaped by
suitable machinery.
The advantages derived by the construction of parts above described are as
follows: The shoulders of the caps bearing against the body of the legs, the strain
is on said body-portion and not on the gudgeons, as is ordinarily the case in the
structures now in use, and hence there is no breaking of these gudgeons and
consequent dislocation of said legs and caps. The ends of the caps being all uniform,
there is no trouble in fitting the same to the legs, and the adjacent ends of the
several caps being mitre-jointed when in position, the pressure that may be exerted
in one direction is met with a resistance in all other directions.
Another advantage of my invention lies in the fact that all the parts necessary to
my structure are made by machinery, and can consequently be turned out with
greater rapidity and at a less cost than is ordinarily the case.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what I
claim is
1. In a timber structure for mines, the combination, with suitable legs, of caps
having their respective ends cut away to form upper and lower shoulders and
beveled tongues, substantially as and for the purpose set forth.
2. In a timber structure for mines, the combination, with suitable legs having
gudgeons at their extremities, of caps having their respective ends cut away to form
upper and lower shoulders and beveled tongues, the latter having their ends suitably
recessed to fit said gudgeon, substantially as and for the purpose set forth.
3. In a timber structure for mines, the combination, with round legs having
circular gudgeons at their extremities, of caps cut away at their respective ends to
form upper and lower shoulders and beveled tongues, the latter having concave
recesses in their ends to fit said gudgeons, substantially as and for the purpose set
forth.
4. In a timber structure for mines, the combination, with legs having their
extremities cut away to form shoulders, of caps having their respective ends cut away
to form upper and lower shoulders and beveled tongues, substantially as and for the
purpose set forth.
T
1007
ALLISON BROS.,
Agents for the Applicant.