Quotes from the Anglican Church Book of Common Prayer and speaks of the simple order for burial. Not even considered a funeral. The deceased is referred to as the corpse or body without any mention of a coffin or burial container.
The Priest and Clerks meeting the Corpse at the entrance of the Church-yard, and going before it, either into the Church, or towards the Grave, shall say, or sing,
When they come to the Grave, while the Corpse is made ready to be laid into the earth, the Priest shall say, or the Priest and Clerks shall sing:
Then, while the earth shall be cast upon the Body by some standing by, the Priest shall say,
The phrase "have laid violent hands upon themselves" seemed a bit peculiar at first but makes sense given the context of the entire quote. - To lay violent hands on one's self, to injure one's self; specif., to commit suicide.
Here is to be noted, that the Office ensuing is not to be used for any that die unbaptized, or excommunicate, or have laid violent hands upon themselves.
The full text can be found here https://www.eskimo.com/~lhowell/bcp1662/occasion/burial.html