Instrument for drawing up great weights
                                Date
                            
                            
                                5 May 1670
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Unknown, Artist
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p175
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 364mm
width (page): 230mm
                            
                        
                            
                            
                            width (page): 230mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Design by Christopher Wren of an instrument to wind up weights with ropes for wells, mines and cranes. This was read to a meeting of the Royal Society on 5 May 1670 when it was suggested to Robert Hooke that it could be used for clock mechanisms.
This image is copied from RBO/4/099.
                            
                            
                        
                            
                            
                            This image is copied from RBO/4/099.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 5 May 1670, ‘Dr. Christopher Wren produced a new contrivance of his for a more convenient winding up of weights by ropes, and serving for wells, mines and cranes, and thought applicable to clocks. […] This being thought applicable to clocks, Mr. Hooke was ordered to make a trial of it’ (Birch 2:435). The minutes do not specify that this was to be registered.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                Christopher Wren (1632 - 1723, British) , Architect
                            
                            
                        
                            
                            
                            
                                Associated place