Press for moulding concrete products

Details Press for moulding concrete products Press for moulding concrete products

1980-07-01

1982-06-01

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

425253, 425413, 425421, 425432, 425452, 425454, 425456, B28B 108, B29C 116, B28B 302, B28B 722

Patent

active

043325408

ABSTRACT:
A press for moulding concrete products has a frame, a horizontal vibrating table, a board and a mould movable vertically between a demoulding upper position and a moulding lower position. A displacing device moves and selectively rigidly connects the mould to the table during vibration of concrete in the mould in a manner whereby the mould, the board and the table form a rigid unit subjected to vibration. The connecting device includes fixing legs attached to the mould and pairs of grippers for symmetrically selectively clamping the lower ends of the fixing legs.

REFERENCES:
patent: 1595255 (1926-08-01), Smith
patent: 2342440 (1944-02-01), Whitsitt
patent: 3530554 (1970-09-01), Whitehurst
patent: 3660004 (1972-05-01), Woelk
patent: 3679340 (1972-07-01), Springs
patent: 3920364 (1975-11-01), Cadogan-Rawlinson
patent: 4238177 (1980-12-01), Crile et al.
patent: 4248583 (1981-02-01), Hedke et al.

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