US1030191A - Automatic grab. - Google Patents

Automatic grab. Download PDF

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Publication number
US1030191A
US1030191A US65523911A US1911655239A US1030191A US 1030191 A US1030191 A US 1030191A US 65523911 A US65523911 A US 65523911A US 1911655239 A US1911655239 A US 1911655239A US 1030191 A US1030191 A US 1030191A
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Prior art keywords
grab
yokes
cups
automatic
closed
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Expired - Lifetime
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US65523911A
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Eduard Kraemer
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Individual
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Priority to US65523911A priority Critical patent/US1030191A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors

Definitions

  • This present invention relates to an arrangement in automatic grabs whose cups do not touch one another in the closed position and which enables the grab to be completely closed in a simple and efiective manner.
  • the arrangement consists of two yokes suspended from the cups in such manner that, when the grab is closed, the slot left between the cups thereof will be covered by said yokes. On opening the grab, the yokes will be moved laterally by a simple stop or the like.
  • Figure 1.- is a front elevation of the automatic grab in its closed position
  • Fig. 2. is a similar view showing the grab in its open position
  • Fig. 3. is a side elevation of same.
  • 1 represents the cups, 2 the yokes suspended at 3 from said cups so that they have the tendency to occupy gravity.
  • the cups are provided with stop-pins 4, which move the yokes laterally when the grab is opened.
  • the yokes do not at all hinder the operation of the cups as they may be freely moved rearwardly. As soon as the grab is being closed, the yokes follow their movements by gravity and finally form a cover-plate for the lower and lateral slots between the cups, when the grab is completely closed.
  • the yokes are made of such width that the materials to be conveyed take their natural angle of slope in the space between the yokes and the cups. Instead Of causing the yokes to be closed by mere gravity, said yokes may be provided with pressure-springs 5 shown in the left parts of the views of the accompanying drawings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Description

E. KRAEMER.
AUTOMATIC GRAB. 1 11101111011 FILED 0017.17, 1911.
INVENTOR WITNESSES m M i K H m 07 vertical positions by EDUARD KRAEMER, OF COLOGNE, GERMANY.
AUTOMATIC GRAB.
Specification of Letters Patent.
Patented June 18, 1912.
To all whom it may concern:
Be it known that I, EDUARD KRAEMER, a subject of the German Emperor, residing at Cologne-on-the-Rhine, Prussia, Germany, have invented new and useful Improvements in Automatic Grabs; and I do hereby declare the following to be a full, clear, and exact description of the same.
This present invention relates to an arrangement in automatic grabs whose cups do not touch one another in the closed position and which enables the grab to be completely closed in a simple and efiective manner.
Broadly stated the arrangement consists of two yokes suspended from the cups in such manner that, when the grab is closed, the slot left between the cups thereof will be covered by said yokes. On opening the grab, the yokes will be moved laterally by a simple stop or the like.
The invention is illustrated in the accompanying drawings, wherein:
Figure 1.- is a front elevation of the automatic grab in its closed position, Fig. 2. is a similar view showing the grab in its open position and Fig. 3. is a side elevation of same.
In these drawings, 1 represents the cups, 2 the yokes suspended at 3 from said cups so that they have the tendency to occupy gravity. The cups are provided with stop-pins 4, which move the yokes laterally when the grab is opened.
As shown in Fig. 2, the yokes do not at all hinder the operation of the cups as they may be freely moved rearwardly. As soon as the grab is being closed, the yokes follow their movements by gravity and finally form a cover-plate for the lower and lateral slots between the cups, when the grab is completely closed. The yokes are made of such width that the materials to be conveyed take their natural angle of slope in the space between the yokes and the cups. Instead Of causing the yokes to be closed by mere gravity, said yokes may be provided with pressure-springs 5 shown in the left parts of the views of the accompanying drawings.
Having fully described the nature of my invention, what I claim and desire to secure by Letters Patent is 1. In an automatic grab of the class clescribed, the combination with the usual cups arranged to leave an open slot between them in their closed position, of yokes suspended from said cups and made of such width that they form a cover-plate for said open slot when the grab is closed, substantially as set forth.
EDUARD KRAEMER.
Witnesses MARGARETE KNnPrEns,
ALBERT PIETRKOWSKI.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.
2. In an automatic grab of the class de-
US65523911A 1911-10-17 1911-10-17 Automatic grab. Expired - Lifetime US1030191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US65523911A US1030191A (en) 1911-10-17 1911-10-17 Automatic grab.

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US65523911A US1030191A (en) 1911-10-17 1911-10-17 Automatic grab.

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US1030191A true US1030191A (en) 1912-06-18

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US65523911A Expired - Lifetime US1030191A (en) 1911-10-17 1911-10-17 Automatic grab.

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